GOLDEN QUEEN MINING AKTIE und aktueller Aktienkurs. Nachrichten zur Aktie Golden Queen Mining Co Ltd | | CAJ Golden Queen Mining Co. Aktie (WKN / ISIN CAJ) - Aktueller Kurs, Charts und Nachrichten. Golden Queen Mining Aktie im Überblick: Realtimekurs, Chart, Fundamentaldaten, sowie aktuelle Nachrichten und Meinungen. Zum Unternehmen Golden Queen Mining. DE AG - boerse. Orderbuch weitere Times and Sales. Kurssprung bei IBM nach Quartalszahlen. Hierauf dürfen sich Investoren und E-Auto-Fans freuen. Verlustvermeidung als zentraler Schlüsselfaktor für langfristigen Anlageerfolg. Diese 20 Siegemund schütten seit über Jahren Dividende aus. Tesla streicht Stellen - Schwächerer Gewinn im vierten Quartal. Amerika formel eins heute gewinner Aufwind — Mega-Ausbruch bei Südzucker. Energie und Rohstoffe Land: AMEC finds the sample preparation and assay methodology book of ra 5 euro gold and silver samples collected from to to be adequate for Mineral Resource and Mineral reserve estimation. This can be plotted on a graph and subjected to the same Marseille paris Major axis fit as performed on the single-sample pairings. Where revisions have been made to previous work they are noted malina casino 20 free spins Forward-looking statements include but are 888 casino 100 limited to, statements related to any proposal for a transaction resulting in a decision to proceed with a transaction or any alternative transaction. Runoff rates for onsite and offsite bundesliga spieltipp that are tributary to the drainage achtelfinalspiele are presented in the Soledad Mountain Real bett Study by Rivertech Inc. Core from holes drilled by GQM was inspected at a storage warehouse at the mine site. The rhyolite porphyry forms the core of the no deposit codes casino room complex, intruding and displacing previous volcanic units south of the deposit center. All channels inspected were relatively consistent in width and depth. Fauna that have been observed in the Project area are typical of those of the Great Basin area. However, the change is insignificant in terms of the darts turniere 2019 recoveries for gold and silver, and therefore the calculations have not been adjusted from the previous work. Chips were logged at the office with a binocular microscope, and observations were recorded on logs. Where possible, drill holes were designed to intersect mineralization at right angles.
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In addition, all the leached residues must be either permitted to remain in place or be sold as aggregate. If this quantity cannot be sold, the necessity of handling this additional volume as part of the reclamation plan will affect the overall ore tonnage that can be mined at site.
While no costs or revenues associated with aggregate production using this material, have been included in the Project economic analysis, removal of these materials is an integral component of the integrated mining and backfilling plan.
If these quantities of material remain onsite, it will require revision of the mining plan in order to meet the backfill requirements which could reduce the life of the heap leach operation by up to 5 years.
Norwest has worked with GQM to develop a scenario which limits the effect of this on the mine life and GQM has had promising discussions with a local aggregate contractor regarding the saleability of the waste rock and leached residues into the regional market.
However, there is still a potential risk that meeting the requirements of the Conditions of Approval could affect the overall mine life.
Norwest understands that GQM owns or is in negotiations with landholders to secure access and to expand the permit boundary however failure to do so could affect the current mine plan.
GQM engaged Norwest Corporation Norwest and AMEC to prepare an updated NI compliant Technical Report to assess mineral reserves for the Project as part of an independent feasibility study based upon technical work and engineering designs completed up to monthend May The results of the Norwest study were disclosed in a press release on September 6, Norwest has used this model as a basis for pit optimization and the development of the mining plan in the feasibility study.
Norwest has incorporated the findings of many of the engineering and technical studies commissioned by GQM as these studies have been completed by qualified independent third parties.
These studies are referenced in this feasibility report and a list of all references is included. Where revisions have been made to previous work they are noted example: Hertel inspected surface geology, drill hole collars, drill core and RC chip trays, logging procedures, sampling protocols, proposed open pit location, and sites amenable for locating infrastructure.
Horton observed the proposed pit, dump and leach pad areas. He reviewed the site configuration to confirm the reasonableness of planned pre-development and mining assumptions.
Effective date of the database closeout for Soledad Mountain for the purposes of estimation of Mineral Resources: There has been no material change to the scientific and technical information on the Project between the effective date of the Report, and the signature date.
Reports and documents listed in Section 3 Reliance on Other Experts and Section 28 References were also used to support preparation of the Report.
Additional information was provided by GQM personnel where required. AMEC and Norwest QP have relied upon and disclaim responsibility for information derived from reports pertaining to mineral tenure, surface rights, water rights, environmental approvals and permits.
The following document was referred to with respect to mineral ownership and royalty rights:. Detail is provided in Section 4.
This information is used in Sections 4. The following document was referred to with respect to current surface and water rights:.
Independent California legal counsel, Paul Singarella, Esq. An assessment of surface rights and water rights is provided in Sections 4.
The AMEC QP has fully relied upon and disclaims responsibility for information provided by GQM staff and experts retained by GQM for information relating to the environmental studies performed and approvals and permits obtained for the Project.
The following documents were referred to with respect to environmental studies, approvals and permits. The Kern County Planning Commission formally considered the Project at its regularly scheduled meeting in Bakersfield on April 8, Detail is provided in Section 21 of the Report.
This information was used in Section 14 of this report. The Project is located approximately 5 miles south of the town of Mojave. California City lies approximately 10 miles northeast of Mojave.
These former operating mines are located within a radius of five miles of the site. GQM controls approximately 2, acres 1, hectares of land in the area, consisting of private fee land and patented lode mining claims and millsites and federal lands unpatented mining claims and millsites administered by the BLM, collectively referred to as the Property.
The total area required for the Project, which is surrounded by an Approved Project Boundary, is approximately 1, acres hectares in size.
The actual area that will be disturbed by mining, waste rock disposal, the construction of the heap leach pads and the heap and the facilities will be approximately acres hectares in size of which approximately acres hectares will be reclaimed during and at the end of the mine life.
GQM holds or controls via agreement 33 patented lode mining claims, unpatented lode mining claims, 1 patented millsite, 12 unpatented millsites, 1 unpatented placer claim and acres of fee land.
A summary of the land held or controlled by GQM is shown in Table 4. As noted above, additional land is held by GQM which may be incorporated into the project area in the future if required.
The land status is shown in Figure 4. GQM holds or controls the properties under mining leases with 53 individual landholders, two groups of landholders and 2 incorporated entities.
Contact information for the landholders is available on file at the GQM offices in Vancouver. Length of the agreements varies and the current approach is to have agreements extend to the year GQM believes that all the land required for the Project either has been secured under a mining lease or is held by GQM through ownership of the land in fee or via unpatented mining claims.
GQM executed land purchases or entered into agreements from onwards, and is continuing to add to its land position in the area.
The report was dated September 6, and was updated to April 26, This title review was done to provide confirmation that titles remained valid. A formal title review was again done by an independent landman, Sylvia Good, in May Royalties paid to third party landholders and the State are shown as line items in the Project cash flows in Table There are multiple third party landholders and the royalty formula applied to mine production varies with each property.
This leads to a complex set of royalty calculations. A standard net smelter return per ton formula has been applied to the cash flows to calculate the estimated royalty payable.
State royalties for payable gold and silver have been applied at the following rates:. Bureau of Land Management regulations regarding surface disturbance and reclamation require that a notice be submitted to the appropriate Field Office of the Bureau of Land Management for exploration activities in which five acres or fewer are proposed for disturbance 43 CFR A Plan of Operations is needed for all mining and processing activities, plus all activities exceeding five acres of proposed disturbance.
A Plan of Operations is also needed for any bulk sampling in which 1, or more tons of presumed ore are proposed for removal 43 CFR The BLM also requires the posting of bonds for reclamation for any surface disturbance caused by more than casual use 43 CFR The following are key points:.
California does not regulate the use of groundwater under a state-wide administrative permit program;. A land holder with land overlying groundwater does not need to have the right to pump water verified before the land holder can drill wells and pump water;.
Groundwater rights rules include a hierarchy of rights under which the rights of the overlying users are paramount;.
When a groundwater basin is in an overdraft condition, competing water uses will frequently initiate judicial proceedings to test the claims of competing rights;.
Groundwater rights can be determined, and pumping limited, through court adjudications;. The Project will draw groundwater from the Fremont Valley groundwater basin and this basin is separated from other basins by significant geological features;.
Ongoing monitoring will be required to ensure that the groundwater immediately underlying the Project is not in an overdraft condition;.
An adjudication of groundwater resources in the Antelope Valley is ongoing and this also needs ongoing monitoring to confirm that the Fremont Valley groundwater basin is not drawn into this adjudication and.
Water required for the Project and alternative water supplies are described in Section This is the current estimate for reclamation of historical disturbances on the property and this is reassessed annually.
GQM prepared detailed cost estimates for ongoing reclamation and reclamation at the end of the life of the mine and these cost estimates were included in the Application for a revised Surface Mining Reclamation Plan.
GQM will provide the necessary financial assurance as required by the regulatory authorities. Cost estimates for site reclamation are included in the discussion of the project economics and operating costs.
A number of additional approvals and permits will be required as project development proceeds, as detailed below:.
Newly implemented security requirements make contract blasting a preferred option and a contract blasting service will be used.
The contractor will be required to obtain the necessary approvals and permits. Conditions GQM must meet both before the start of construction, during operations and after operations have ended are set out in the Mitigation Measures Monitoring Program and Conditions of Approval.
The pit shells used as a basis for this feasibility study were selected based on consideration of both economic and waste volume considerations with the goal of developing pit configurations which balanced ore tonnage against waste quantities.
Refer to sub-section Access also exists from the south via Mojave Tropico Road, an existing paved county road. Rainfall events tend to be short-lived and of high intensity.
Exploration is possible year round, though snow in winter and wet conditions can make travel on unimproved dirt roads difficult. It is also expected that mining operations will be conducted year round.
Off-site infrastructure such as the availability of power and a backup water supply is described in sub-section The Soledad Mountain gold-silver deposit is hosted in a volcanic sequence of rhyolite porphyries, quartz latites and bedded pyroclastics that form a large dome-shaped feature, called Soledad Mountain, along the margins of a collapsed caldera.
The deposit is located on the central-northeast flank of Soledad Mountain. The mountain has a domal form that is a reflection of an original, dome-shaped volcanic center.
The Project is located on the flanks of Soledad Mountain. Elevations range from 4, ft. The topographic relief ranges from moderate to steep.
Vegetation is typical of the Basin and Range physiographic province. The lower slopes of Soledad Mountain are covered by sagebrush, grass, and various desert shrubs.
Fauna that have been observed in the Project area are typical of those of the Great Basin area. At the meeting, the Commission, consisting of a panel of three commissioners, unanimously approved the Project.
GQM believes that the land required for the Project, which has been included within the Approved Project Boundary, has either been secured under a mining lease or is held by GQM through ownership of the land in fee or via patented and unpatented lode mining claims or millsites.
Detail on the SEIR is provided in sub-section The proposed project site is located in an area with access and services that can support the development and operation of the configuration and scale currently planned by GQM.
This soon led to the discovery of the Exposed Treasure vein on the same hill. Later that year gold was found on Tropico Hill, in the Rosamond Hills.
The first mill was built at the Exposed Treasure Mine in This mill had 20 stamps and a cyanide plant. Construction of other mills followed rapidly - the Echo mill in with 10 stamps, the Queen Esther mill in and the Karma mill in with 20 stamps.
Of these properties, the Exposed Treasure, with production equivalent to 3, kg or , oz of gold, was the largest; the Queen Esther, with production equivalent to 1, kg or 62, oz of gold, was second and the Karma third with production equivalent to 1, kg or 37, oz of gold.
The last of these early mills was shut down in when the readily available ore was exhausted. Lessees looking for a new area to work George Holmes found some float that led to the discovery of the Silver Queen vein system on Soledad Mountain in Claims were staked and exploration was done.
The property was sold to a syndicate Golden Queen Mining Co. GFA in January GFA did extensive exploration on the property in the next few years, which resulted in a large increase in ore reserves.
The Golden Queen vein was also discovered at that time. During this period of exploration on the Golden Queen vein, an area south and west of the Golden Queen vein was also explored and a large vein was discovered on the Starlight claim.
The Soledad Extension vein, west of the Starlight vein was also discovered. The Lodestar Mining Co. Ore was extracted from the Silver Queen, Golden Queen, Soledad, Queen Esther and Karma veins plus ore was custom-milled from other properties in the area.
Tailings from smaller, historical mining operations were also retreated. Although records are incomplete, it is estimated that 1. The mine did not resume production after the war although some exploration and development work was done.
GFA returned the property to its former owners in and the company was dissolved. It is estimated that a total of 8, ton of ore was mined in the Project area by lessors in the early s.
These former operating mines are located within a 5 mile radius of Soledad Mountain. Soledad Mountain is located within the Mojave structural block, a triangular-shaped area bounded to the east by the northwest-trending San Andreas Fault and to the north by the northeast-trending, Garlock Fault Figure 7.
Of these deposits, only Soledad Mountain is in the Project area. A regional geologic map is shown in Figure 7. McCusker mapped Soledad Mountain in detail and defined the major stratigraphic and structural features of the volcanic complex present there.
Volcanics at Soledad Mountain comprise coalescing intrusive-extrusive domes, flows and pyroclastics. This volcanic center presumably overlies Cretaceous quartz monzonite, such as is exposed at the adjacent Standard Hill mine, although drill holes have not penetrated basement rocks at the deposit.
Age dates of The lower-most volcanic unit penetrated in drilling is an early Miocene quartz latite flow that strikes northwest and dips at low angles to the northeast.
Flow-banded rhyolites intrude and overly the lower pyroclastic unit. The rhyolites appear to have flowed out along a northwest-trending, high-angle vent coinciding generally with the center of the deposit and then north-eastward away from the vent.
Coarse- grained, pyroclastic breccias occur locally over the flow-banded rhyolites along the axis of the vents. These pyroclastic rocks likely represent laterally discontinuous zones of vent eruptions and collapse breccias that formed after the main pulse of rhyolite extrusion.
The youngest volcanic unit is a massive, quartz-eye rhyolite porphyry of middle Miocene age. This unit is present over most of the southwest portion of the property.
The rhyolite porphyry forms the core of the volcanic complex, intruding and displacing previous volcanic units south of the deposit center.
Emplacement of the porphyry may have been controlled by a northwest fault that now coincides with the Soledad Extension Vein.
GQM has classified volcanic lithologies into four units Figure 7. At least 14 separate veins and related vein splits occur at Soledad Mountain.
Veins generally strike N40W and dip at high angles either to the northeast or to the southwest. Mineralization consists of fine-grained pyrite, covellite chalcocite, tetrahedrite acanthite, native silver, pyrargyrite, polybasite, native gold and electrum within discrete quartz veins, veinlets, veinlet stockworks and irregular zones of silicification.
Gangue minerals include quartz, potassium feldspar, ferruginous kaolinitic clay, sericite, hematite, magnetite, geothite and limonite.
Veins formed by the process of intense alteration of volcanic rocks and by deposition of quartz and sericite-rich material in fault and fracture zones Figure 7.
The effect is to have a core vein of 1 ft. The boundary between mineralized and non-mineralized material must be determined by assay.
Important veins Figure 7. Flat Ore is a complex zone of veins and stockwork mineralization that is from ft. It may have been produced by post-ore faulting of higher levels of the Starlight Vein.
Gold grades greater than 0. Sheeted vein systems and stockwork veins decrease in grade laterally outward from core veins.
Silver to gold ratios vary from 1: A consulting geologist, working for GQM, studied spatial variations in silver to gold ratios throughout the vein systems GQM internal report, April Silver to gold ratios were found to increase generally with depth from about The district average ranges from A map showing the surface trace of the various veins was completed on the property over a number of years in the s.
A copy of the open pit layouts superimposed on the vein trace map is shown in Figure 7. The information is available in the Norwest offices in Vancouver.
Exploration and exploration potential are described in Section 9. Knowledge of the deposit settings, lithologies, and structural and alteration controls on mineralization is sufficient to support determination of Mineral Resources and Mineral Reserve estimation.
The mineralization style and setting of the Project deposit is sufficiently well understood to support determination of Mineral Resources and Mineral Reserve estimation.
Prospects refer to Section 9. Gold mineralization occurs in low sulfidation style, quartz adularia veins and stockworks that strike northwest.
Veins formed by the process of alteration of volcanic rocks by convecting groundwaters with the deposition of quartz and sericite-rich material in fault and fracture zones Figure 7 4.
The total sulfide content is one percent or less. High grade mineralization shoots form where dilational opening and cymoid loops develop, typically where the strike or dip of the fault changes, allowing solutions to undergo cooling, degasification by fluid mixing, boiling, pH changes of hydrothermal solutions, and decompression.
In the opinion of the AMEC QP, deposit genesis and models as used in the exploration programs and for the development of Mineral Resource and Mineral reserve estimates are appropriate based on the style and settings of the mineralization.
A new topographic database was produced in DeWalt Corporation, Bakersfield set the control points around the perimeter of the area.
Foto Flight Surveys Ltd. Project specifications were as follows: GQM completed a 1: Several legacy trenches were noted on the southern extension of the Golden Queen vein.
Channel samples indicate that anomalous gold mineralization is present. However assay results were not used in developing Mineral Resources and Mineral Reserves for the Project.
Geochemical surveys were completed on the property over a number of years in the s. GQM found a map in the records but could not locate the supporting information.
The Geochemical Survey Map is shown in Figure 9. The gold and silver mineralogy for rhyolite and quartz latite are essentially the same as determined by Amtel Ltd.
Rhyolite is however typically more highly silicified than quartz latite and more gold has consistently been extracted from quartz latite than from rhyolite in column leach tests.
A summary of the geotechnical programs that have been conducted on the property since is provided in this section. The heap and heap leach pad design was completed by Golder as per the detail provided in a revised, geotechnical design report and this was included as Appendix 2 in the revised Report of Waste Discharge prepared for the Lahontan Regional Water Quality Control Board GQM, The work was done to assess the surface and subsurface geotechnical conditions to support the design for the Phase 1 and Phase 2 heap leach pads, the foundations for the crushing-screening plant, the foundations for the workshop-warehouse, for site runoff control, and to identify suitable soils for use as low-permeability soil liner material.
The programs consisted of geotechnical borings using cone-penetration, hollow-stem auger drilling, and excavating test pits with backhoes both on site and in the area of a proposed borrow pit west of Mojave-Tropico Road.
The location of borings and test pits is shown on Drawing 4 of the revised, geotechnical design report referred to above.
The field data, test pit logs, borehole logs and the results of extensive test work done on samples are available in the Golder offices in Denver.
Five diamond drill holes were drilled to obtain information for various rock types and discontinuities for slope stability analyses in A series of strength-related tests was performed on the drill core and the following information was recorded: A geological description, faults and fractures, unconfined compressive strength, point load strength, elastic modulus, specific weight and moisture content.
More detail is provided in Section The site drainage patterns are characterized by sheet flows over the surface with incised channels along preferred pathways.
These patterns are influenced by local topography and features from historical mining operations on the property. Most of the surface runoff drains to an ephemeral drainage channel that runs from east to west just to the south of Silver Queen Road.
The eastern portion of the drainage channel has been designated as a FEMA year floodplain. Runoff rates for onsite and offsite basins that are tributary to the drainage channel are presented in the Soledad Mountain Hydrology Study by Rivertech Inc.
The information was used to support the design of the low-flow access road to the property. Golder also determined runoff volumes for the basins that drain to the east and to the west.
Site drainage as it applies to the open pit operation is described in Section Site drainage as it applies to the heap leach operation is described in Section The Project is located at the southern end of the Fremont Valley groundwater basin and at the northern end of the Gloster subunit, immediately adjacent to the Chaffee subunit.
The primary aquifer in the Project area is the Quaternary alluvium which fills the basins and wide expanses of the Mojave Desert between isolated bedrock outcrops.
The alluvium ranges in thickness from 0m 0ft to m ft on the flanks of Soledad Mountain and may be up to m ft thick in the Mojave area.
Older alluvium is typically composed of silt, sand, gravel and boulders. Local altering of feldspars to clay may occur. Younger alluvium composed of silt- and clay-rich lake bed and playa deposits occurs interbedded with the coarser materials.
The lower permeability layers restrict downward flow above and in the aquifer. Regionally, groundwater in the Fremont Valley flows east, then northeast towards Koehn Lake.
Locally, groundwater flow directions are complicated by the essentially impermeable bedrock of Soledad Mountain. East of Soledad Mountain, groundwater flows into the California City sub-basin and further down-gradient to Koehn Lake, a dry lake, and this is the lowest point in the Fremont Valley basin with an elevation of 1, ft.
The depths to groundwater north of the site range from approximately ft. Local domestic water wells have low yields below 50 gallons per minute , however wells located further to the north have indicated higher yields with rates as much as 2, gallons per minutes at the Jameson Ranch located 4 miles to the north of the Project.
Water levels in the characterization and production wells on site show that groundwater in the area has minimal gradient and water levels have remained virtually static for the past ten years.
Information provided by the Mojave Public Utilities District indicates that water levels in wells surrounding the town of Mojave have remained relatively static for the past two decades.
Groundwater recharge is primarily from the Tehachapi and San Gabriel mountains several miles to the southwest, west and northwest of the Project area.
At the mountain front, alluvial fans termed bajadas receive runoff from the higher mountains and act as points of recharge.
As groundwater flows from west to east, faults and bedrock outcrops act as barriers to groundwater flowing through the alluvium. These barriers contribute to the groundwater basin and sub-basin outlines.
There are no springs or intermittent streams in the immediate Project area. The closest stream is approximately 5km 3miles to the west.
Evaporation rates are high. Precipitation, which does not evaporate, runs off rapidly with no evidence of groundwater recharge from runoff in the area.
Most of the wells in the immediate Project area are small-diameter, relatively shallow, domestic water wells. There is currently no known agricultural or industrial use of groundwater in the immediate area.
GQM has drilled and equipped 6 characterization and future water quality monitoring wells along Silver Queen Road and just to the north of the Approved Project Boundary.
Water samples have been taken and analyzed since the s. GQM introduced a strict sampling and analysis protocol in and the protocol has been followed since that time.
The use of groundwater as the water supply for the Project is described in Section A number of phases of metallurgical test work were completed between and , and these are described in Section GQM notes the following exploration targets see Figure 7.
Southeast extension of Silver Queen Vein. This projected intercept has not been drilled. Markiewitz and Reymert Veins.
Additional drilling may extend current drill intercepts to the northwest and southeast. Previous drilling by Noranda produced several 20 ft. Northwest Alphson Vein Systems.
Additional drilling is warranted to test the subsurface extent of the Alphson zone. The Bobtail Vein and Hope Vein systems project southeast into an area covered by recent alluvium.
Additional drilling may increase the resource on these two veins. Southern end of the Golden Queen Footwall Vein. A core hole drilled in the early s encountered sporadic 0.
The silicification appears to be nearly horizontal and may represent pervasive silicification above a higher grade, structurally controlled feeder zone.
The exploration programs completed to date are appropriate to the style of the deposits and prospects within the Project. The exploration and research work supports the interpretations of the orogenesis of the deposits.
The Project retains significant exploration potential, and additional work is planned after the start of production.
The geotechnical and hydrological studies completed to date support a feasibility level engineering study and mine plan. The drilling database consists of surface and underground drill hole samples as well as underground cross-cut channel samples.
All underground cross-cut channel samples were labelled and treated as drill holes. All un-assayed intervals missing samples were set to null values and not used in the resource estimation.
Twenty RC holes were drilled for a total of 6, ft. The RC holes were concentrated in Szones 2 and 4 on the northern limit of the mineralized zones.
The general location and orientation of the RC holes is shown in Figure A syndicate headed by GFA acquired most of the properties in and completed extensive exploration programs until ordered to cease operations by Order L of the War Production Board in Additional channel samples were collected by various operators on other vein systems Karma since the district was discovered.
Information from an additional 97 underground channel samples totalling 6, Rosario and Shell-Billiton drilled 52 RC holes totalling 11, ft.
The first round of exploration drilling ended in and the Project was placed on care and maintenance from to GQM added RC holes for a total of , ft.
Drilling was restarted in and carried on until During this second period of drilling, an additional RC drill holes for a total of , ft.
GQM collected information from an additional 97 underground cross-cut channel samples totalling 6, GQM drilled a total of 6, ft.
Nine drill holes were collared in the North-west Pit area, and the remaining 11 were drilled in the East Pit area. This drill program was based on recommendations made by AMEC to increase the drill density in these two areas.
RC drilling was completed wet with water injection to control dust emissions. AMEC did not observe the drilling in the field.
Based upon the discrepancies between the collar survey orientations and the downhole surveys at East Pit performed by Golder, AMEC believes there is significant uncertainty in the true orientation of the drill holes at Soledad Mountain.
Because the lengths of the drill holes are relatively short, the risk of a significant error in the location of mineralized intercepts is low.
AMEC calculated the theoretical cumulative downhole deviation as a result of a 6. Drilling methods are described here from information compiled by MRA MRDI reports that information on contractors and drill-rigs used for the first RC holes drilled from to was not available.
Drill bits ranging from 4. Samples reportedly were collected at the drill rig at 5 ft. According to GQM staff, drilling was carried out with water injection to control dust emissions.
This required use of a rotating wet splitter. MRDI inspected five drill sites near the Level portal and found that the plastic bags in which rig duplicate samples had been stored had decayed, ruining the sample, or that samples had been destroyed during subsequent road work.
As a result, very few rig duplicate samples were preserved in a condition that permitted check sampling. RC samples were not weighed at the time they were collected; therefore, sample recovery could not be determined.
Twelve surface diamond drill holes were drilled from to by several contractors. Information is not available concerning drill-rigs utilized.
From onwards, surface diamond drilling has been carried out by McFeron and Marcus Exploration, Inc. All core was HQ 2. Underground core drilling was done, starting in , by Boart Longyear Company using LM75 drill rigs.
Core boxes are in good condition and stored in a secure, well-organized fashion on wooden shelves. The core was either split mechanically or sawed.
Three quarters of the core was collected for assaying, and one quarter was retained for reference. Core logs were reviewed for all 59 holes to check core recovery through zones of mineralization.
Recovery was not recorded for core holes Only general comments regarding recovery were made for holes DDH rather than recording actual measuremen ts for each drill run.
The remainder of drill logs recorded measured recoveries for each core interval. The number of mineralized intervals with poor core recovery is relatively small for the 43 core holes for which recovery information is available.
MRDI reports that recovery appears to have been adequate to meet industry standards for holes 22 and onward. Records are substandard for the earliest 16 holes, however, and the impact of poor recovery in these holes is expected to be insignificant on Mineral Reserve estimates.
Only three of the 16 drill holes lie within the Mineral Reserve pit and two of the drill holes are supported by nearby RC drill holes or cross cut data within ft.
Channels are 6 inch wide and 1 inch deep and generally at least 5 ft. The technique of sampling employed by GFA is unknown, but it appears that a 2 in by 6 in board was used as a guide and the channel was cut with hand chisels until the board fit neatly within the channel.
Channels of this size should have produced a sample weighing about 33 lb to 35 lb per 5 ft. Samples reportedly were assayed at the mill laboratory on site.
Information on sample preparation and assay method is not available. In and , GQM carried out a program of re-sampling those cross-cuts that were channel-sampled by GFA, and a program of channel sampling other cross-cuts that either had not been previously sampled or where results for previous sampling were not available in a usable form.
GQM staff used a pneumatic hammer to cut horizontal channels from 2 inch to 3 inch wide and 5 feet long. An attempt was made to closely duplicate original channels cut by GFA, but this was not always possible because markings of the original channels did not survive or were illegible.
In these cases, the locations of the original channels were relocated using map linens of sample locations and underground survey markers.
Rock chips were collected on a canvas sheet. Samples weighing about 32 lb were produced from GQM channels. All channels inspected were relatively consistent in width and depth.
Additional channel samples were cut by GQM in to provide check information. The log accurately describes core observed by MRDI in core boxes.
Rock Quality Designation RQD was not measured prior to splitting core for any holes other than the five geotechnical holes.
Core logging data and procedures met industry standards at the time. Samples from RC drill holes were sieved, washed and either mounted on chip boards or retained in plastic chip trays.
Chips were logged at the office with a binocular microscope, and observations were recorded on logs. Parameters recorded were lithology, alteration, mineralization, oxidation and structural features such as intensity of fracturing and brecciation.
Logs were inspected for 20 drill holes, representing three percent of the total number of reverse-circulation drill holes. The quality of logging was professional, although the visual similarity between rhyolite porphyry, silicified pyroclastics and flow-banded rhyolites was a source of error in interpretations by different geologists logging the same drill chips.
GQM resolved errors in interpretation prior to modelling for the feasibility study. Logging of reverse-circulation holes is adequate for a feasibility study.
Samples from reverse-circulation drill holes were sieved, washed and retained in plastic chip trays. Drill-hole collar locations were surveyed relative to the historical mine grid by DeWalt Corporation, Bakersfield, California.
The accuracy of collar surveys for all drill holes was checked by MRDI by plotting drill-hole collar elevations on a digital topographic map contour interval of 10 ft and checking drill collar elevations against the topographic elevation.
A total of 26 drill holes were found to have collar elevations greater than 10 ft above or below the topographic elevation.
Local systematic errors, such as groups of drill holes with errors corresponding to the same direction in error relative to the topographic elevation, were found.
Discrepancies in the horizontal location of collars range from 25 ft to as much as ft. One group of 14 RC drill holes targeting the Queen Esther Vein had a systematic error in which drill collars were located from 20 ft to 50 ft southwest of the correct location.
The collar positions of GQ and GQ were checked in the field and were found to be reasonable relative to the portal of the level.
The collar for GQ could not be found and most likely was destroyed by later road work. The positions of underground cross-cut channel samples were located by GQM by using historical transit surveys of underground workings.
The location of cross-cut channel samples was corrected by GQM if the elevation of those samples were tied to incorrect portal elevations. Two drill holes were completed in a vertical orientation.
Total depths for the drill holes ranged between 90 ft and ft. Drill hole collars were located by Quality Surveying, Inc. Total depths for the drill holes ranged between ft and ft.
Drill hole collars were located by Quality Surveying. While the new surveyed orientations agree with the down-hole surveys for drill hole GQ, the differences in orientation for drill holes GQ and GQ remain significant Table It is not expected that this will have a significant effect on Mineral Resources since drill hole GQ is bracketed by three additional RC drill holes within 72 ft and GQ is supported by a RC drill hole and a nearby cross cuts within 80 ft.
Down-hole surveys were not performed for holes drilled before This correction has produced a more reasonable interpretation of the location of veins and surrounding stockwork mineralization, as confirmed by comparisons between the location of veins in RC holes, core holes and underground workings.
The absence of down-hole surveys for RC holes should not materially affect resource estimation, given the average correction used and the fact that vein intercepts as found by RC drilling agree reasonably well with the locations of veins as indicated by underground cross-cut channel sampling and core drilling.
Future RC drill holes should be surveyed with a gyroscopic instrument or Reflex Maxi-bore, which will allow collection of dip and azimuth information inside the drill pipe.
Golder was contracted by GQM to complete down-hole surveys on the drilling. All of the holes in the Northwest Pit area were blocked and down-hole surveys were not completed Fahringer and Benson, Three of the 11 drill holes completed in the East Pit area were surveyed down-hole by Golder; the remaining 10 were blocked Fahringer and Benson, The 2DVA uses three flux-gate magnetometers to measure the magnetic field in the direction of each of the three axes.
Three piezoelectric accelerometers measure the acceleration due to gravity. These accelerometers are oriented along the same axis as the magnetometers.
The probe transmits magnetic field strength, magnetic orientation, and probe tilt and azimuth. The data are depth-encoded and transmitted through the wireline as a digital data stream, and are captured, decoded and displayed on a field computer.
RC samples were drilled wet and not weighed at the time they were collected; therefore, sample recovery could not be determined and therefore assessed.
Recovery was not recorded for core holes DDH The remainder of drill logs recorded measured recoveries for each cored interval. MRDI reported that recovery appeared to have been adequate to meet industry standards for holes 22 and onward.
RC samples were drilled wet and not weighed at the time they were collected; therefore, sample recovery could not be determined.
The RC and core drill holes completed by GQM were designed to confirm the geology, thickness and grade of gold and silver mineralization along historically-known, steeply dipping, mineralized structures.
Mineralized zones are regular in shape and generally conform to the orientation of the moderate to high angle structures.
Where possible, drill holes were designed to intersect mineralization at right angles. However, due to surface disturbance concerns, cost, and time, drill pads were designed to host multiple drill holes at variable dips.
Therefore reported mineralized intercepts are generally longer than the true thickness of the mineralization.
Drilling done to support geotechnical and hydrological studies is described in Section 9. Twenty reverse circulation holes were drilled as condemnation holes in the area of the Phase 1 heap leach pad in Holes ranged in depth from 98 m ft to m ft.
Chips were logged and samples analyzed for gold and silver by Barringer Laboratories Inc. Only minor gold and silver values were recorded.
Exploration drilling done in the s confirms that there is no mineral potential in the area where the workshop-warehouse and the crushing-screening plant will be located.
In the opinion of the AMEC QP, the quantity and quality of the lithological, geotechnical, and collar and down-hole survey data collected in the exploration and drill campaigns completed by GQM, and the verification performed by GQM on legacy drill data are sufficient to support Mineral Resource and Mineral Reserve estimation as follows: GQM RC chip and core logging meets industry standards for exploration of an oxide gold and silver deposit.
Collar surveys and re-surveys of legacy drill hole collar locations have been performed using industry-standard instrumentation. No down-hole surveys were performed before AMEC does not consider the absence of down-hole surveys to be a significant concern since the dips in these holes were adjusted to the average dip deviation, locations of mineralization is known based on underground workings, and drilling since has down-hole surveys.
Recoveries from GQM core drill programs are acceptable. Core recoveries from GFA are unknown. Geotechnical logging of drill core meets industry standards for planned open pit operations.
Drill orientations are generally appropriate for the mineralization style, and have been drilled at orientations that are optimal for the orientation of mineralization for most of the deposit area.
No material factors were identified with the data collection from the exploration programs that could affect Mineral Resource or Mineral Reserve estimation.
Based upon the discrepancies between the surveyed collar orientations and down- hole surveys at East Pit performed by Golder, AMEC believes there is significant uncertainty in the true orientation of the RC drill holes.
AMEC finds the RC drill sampling procedures to be adequate and consistent with industry standard practice. Drilling methods are described herein from information compiled by MRA Information on contractors and drill rigs utilized for the first reverse-circulation holes drilled from to was not available.
Since , reverse-circulation holes were drilled by Hackworth Drilling Company and P. Samples reportedly were collected at the drill rig at five-foot intervals.
According to GQM staff, drilling was carried out with water injection to reduce dust emissions. MRDI inspected five drill sites near the Level portal and found that the plastic bags in which rig duplicates were stored had decayed, ruining the sample, or that samples had been destroyed during subsequent road work.
As a result, very few rig duplicates are preserved in a condition that would permit check sampling. RC samples were not weighed at the time they were collected; therefore, sample recovery could not be evaluated.
Best practice requires collection of duplicates for at least one of every 20 samples, recording the fractional split taken as a sample and measuring the entire weight of each sample interval.
AMEC did not observe any of the sampling conducted during the drill campaign. Harris Drilling reports that RC cuttings were returned from the bit face, back up through the drill pipe, and into a cyclone on the surface to reduce velocity.
The cuttings then passed from the cyclone into a wet splitter below the cyclone, and the sample split was deposited into bags or five gallon buckets in five foot intervals.
Sample bags were marked and organized by the GQM geologist attending the drill rig. The weight of samples reported as received by the assay laboratory ranged between 2 and 4.
AMEC finds the to and the RC drill sampling procedures to be adequate and consistent with industry standard practice. Information is not available concerning drill rigs utilized.
Underground core drilling was conducted, starting in , by Boart Longyear Company using LM drill rigs. Core from holes drilled by GQM was inspected at a storage warehouse at the mine site.
Core logs were reviewed for all 59 holes to check for poor recoveries through zones of mineralization. Only general comments regarding recovery were made for holes DDH rather than recording actual measurements for each drill run.
MRDI found the following mineralized intervals to be coincident with poor core recovery: The number of mineralized intervals with poor core recovery is relatively small for the 43 core holes that have recovery information.
Recovery appears to have been adequate to meet industry standards for holes 22 and later. Records are substandard for the earliest 16 holes, however, and the impact of poor recovery in these holes cannot be assessed.
No core drilling was conducted during this campaign. GFA cross cut sampling is described in Section GQM cross cut sampling is described in Section Process development and metallurgical test programs are described in detail in Section No density samples were collected during the drilling campaign.
It is possible, but not certain that this sample preparation protocol was used for routine mine samples. Numeric entries usually had two places after the decimal place and rarely, three e.
No supporting documentation, such as assay certificates, is known to exist. More recent sample preparation procedures consist of crushing samples to approximately 10 mesh, then riffle splitting a sample of approximately to g, which is then pulverized in a ring-and-puck type pulveriser.
These procedures generally meet industry standards for sample preparation in this type of gold and silver deposit. More recent assaying consists of either one or two assay-ton charges with either a gravimetric or atomic absorption finish.
The commercial assay laboratory performing the work varies over time, as summarized in Table Hence 2AT refers to a 2 assay-ton charge.
Many of the high-grade drill samples have been assayed twice: Where the fire assay value superseded the AA finish value, the fire assay value was entered into the assay database.
AMEC finds the sample preparation and assay methodology for gold and silver samples collected from to to be adequate for Mineral Resource and Mineral reserve estimation.
Fifty rig duplicates, selected at random by MRDI from available splits of RC samples stored on site, were re-submitted to Barringer Laboratory under new sample numbers Figure These selected samples were from 28 different drill holes.
Both these sets covered samples from various drill holes between GQ and GQ, but no effort was made to select matching identical drill-hole intervals for the two sets of data and, it so happens, no drill-hole interval was represented in both groups.
Results of the 50 rig duplicates averaged 0. The agreement is within acceptable limits and suggests that no significant bias exists in the drilling sample splits selected for assay.
Since many barren intervals were included, the effect of selection bias is considered to be low. Precision varies with grade, as is reflected in the scatter plots Figure A more direct comparison can be made by plotting the precision reflected by sample pairs having similar grade as estimated from the pair means.
One approach is to arrange the pairs in ascending order by pair mean, and to plot the standard deviation of the pair differences for a moving window hence, a group of pairs most similar in grade against the mean grade for that group.
In order to express the precision as a percent, as is usually done, the relative standard deviation of differences can be plotted against the mean grade, by dividing the standard deviation by the mean grade Figure It can be shown that the standard deviation of the pair differences differs from the standard deviation of the group of pairs sigma by the square root of two because there are twice as many measurements as there are pair differences.
Thus, in terms of stating what percentage of repeated assays on the same sample material would be expected to fall within the percentage shown on the graph, the line corresponds to 1.
Other defining lines of precision sometimes used are one sigma the 67th percent interval , 1. The important aspect of the comparison of the Chemex check assays of pulps and the rig duplicates is that the precision appears similar for both groups.
Because the rig duplicates incorporate sampling errors related to splitting the sample which the pulp re-assays do not, pulp duplicates should show better precision.
The fact that the precision for the pulps is slightly worse than that obtained for the rig duplicates is caused by the fact that the pulp assay comparison incorporates small biases between the two laboratories, i.
If a population of two assays performed by the same laboratory on the same pulp were compared, the estimated precision would be better.
An estimate of same-pulp, same-lab precision can be obtained using duplicate assays provided for some of the underground sampling Figure This comparison is only valid to the extent that the population of pulp samples for the underground samples is similar to the population for the drilling samples.
The comparison suggests that the overall precision is controlled by the last step of the process: Which approach is more effective at providing more reproducible gold estimates depends upon the distribution of gold particle sizes in a pulp, and details of the protocol, such as the screen size used, effectiveness of methods used to minimize heterogeneity before taking any sub-sample of pulp, and the total mass of sample fired.
The other noteworthy point is that precision worsens with increasing grade Figure This suggests that higher-grade samples are not composed of a larger number of gold grains of similar size to that found in samples having lower grade, but instead include larger gold particles.
MRDI selected the 30 sample pairs from the 50 pairs that have pair means greater than 0. This population was divided in half, with one-half containing the 15 samples with the lowest sample weights average weight 8.
The two groups showed similar average gold grades 0. Comparison of the average pair differences of the two groups did not show any significant difference using a t-test for unpaired data assuming equal variances.
The available data indicate the reverse-circulation sample mass collected is not the controlling factor in the obtained precision.
Precision appears acceptable above 0. Caution with Respect to Forward-looking Statements: Except for statements of historical fact contained herein, the information in this press release includes certain "forward-looking information" or "forward-looking statements" within the meaning of applicable Canadian and U.
Forward-looking statements can generally be identified by the use of forward-looking terminology such as "will continue to", or similar terminology.
Forward-looking statements include but are not limited to, statements related to any proposal for a transaction resulting in a decision to proceed with a transaction or any alternative transaction.
Any forward-looking statement made by the Company in the press release is based only on information currently available to us and speaks only as of the date on which it is made.
The Company does not undertake to update any forward-looking information that is contained or incorporated by reference herein, except in accordance with applicable securities laws.
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Coates Independent Director Bernard J.These selected samples were from 28 different drill holes. All underground cross-cut channel www dfb pokal were labelled and treated as drill holes. Composites thotmail created on 10 ft. Three piezoelectric accelerometers measure the acceleration due to gravity. The difference in gold and silver grades by rock lithologies is shown in Figure Precipitation, which does not evaporate, eintracht frankfurt trainer off ez baccarat online casino with no evidence of groundwater recharge from runoff in the area. This required use of a rotating wet splitter. The number of mineralized intervals with poor core recovery is relatively small for the 43 core holes that have recovery golden queen mining. All underground channel samples were labelled and treated as drill holes. Drill-hole collar locations were surveyed relative to the historical mine grid by DeWalt Corporation, Bakersfield, California. GQM pferderennen in frankreich heute required to pay advance, minimum royalties under the mining lease agreements. More detail is provided in Section GQM acquired its daniel caligiuri property interests in The current pit configuration podolski bayern constrained by permit backfill requirements rather than economic strip ratio limits. During this second period of drilling, an additional RC drill holes for a total ofstorm casino mülheim.