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United States
Golden Chest Mine

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 Location:
72 km E from Coeur d`Alene, Idaho, United States

  Address:
201 N. 3rd St.
Coeur d’Alene
Idaho, United States
83814
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  • Overview
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  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
  • Drift & Fill
  • Cemented backfill
Production Start...
Mine Life2023
The Golden Chest Mine is comprised of an underground mine, an open pit mine, and an exploration project.


Owners

Source: p. 7,25
CompanyInterestOwnership
Idaho Strategic Resources, Inc. (operator) 100 % Indirect
Idaho Strategic Resources, Inc. (IDR) is the operator and owns 100% of the Golden Chest LLC (owner of the Golden Chest Mine).

Contractors

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Deposit Type

  • Vein / narrow vein
  • Orogenic
  • Intrusion related


Summary:

The Golden Chest deposit is recognized as an “intrusive related” orogenic gold-quartz vein system by IDR geologists. However, recently there has been the suggestion that the Golden Chest deposit type could be a Reduced Intrusion-Related Gold System (RIRGS). The RIRGS deposit classification is already mired in confusion over nomenclature. It should be remembered that each ore deposit has its own specific and unique characteristics and not all deposits exhibit all characteristics of any particular classification. Deposit models are sets of guidelines, not absolute parameters. No one model will describe multiple deposits, one model describes one deposit. That being said, there is considerable overlap between the two deposit model types and the Golden Chest deposit has characteristics of both orogenic and RIRGS model types. This report will continue to use the orogenic deposit classification for the Golden Chest. The primary geological control to mineralization at the Golden Chest is the Idaho Fault. The Idaho Fault separates the hanging wall (Prichard Formation-Member H) from its footwall (Prichard Formation- Member G). The Idaho Fault acted as the conduit for the mineralizing fluids that produced most of the veins at the Golden Chest Mine. The veins are generally stratiform and conformable to the Idaho Fault and are centered along the Idaho Fault to form a sub-parallel, stacked vein set. The alteration is generally weak and mostly occurs immediately adjacent to the veins. S ........


Mining Methods

  • Truck & Shovel / Loader
  • Drift & Fill
  • Cemented backfill


Summary:

The Golden Chest Mine is comprised of an underground mine, an open pit mine, and an exploration property located about 1.5 miles east of Murray, Idaho. T

Open Pit Mining Operations
In 2022, IDR continued its open pit mining operation which commenced in August of 2016. Mining in the Klondike pit was completed in June. A small pit on the Jumbo vein was mined intermittently during 2022 also. A total of 8,400 tonnes of ore at average grade of 4.55 gpt gold and 80,200 tonnes of waste were mined during the year. Ore tonnes and grade in the Klondike Pit were lower than modeled because of unmapped, historic stopes in the Klondike where high-grade material had been mined out by the old- timers.

Mining Operations - Underground
The Golden Chest is a ramp access mine that was developed as a modern rubber-tire operation. All material is transported to the surface via two underground haul trucks and occasionally a 4.6 m3 load-haul-dump underground loader (LHD). Stope rounds are transported to bays using 1.5 m3 LHD’s. Drilling advance of stope rounds is accomplished with two Tamrock Quasar single boom jumbo drills. An electric over hydraulic twin boom jumbo drill and small section (2.7 m by 2.7 m) bolting machine have been procured to further increase operational efficiencies. The main ramp has a width and height of 4 m by 4.6 m respectively. All ventilation/secondary escape raises are mined 3 m by 3 m. Stope dimensions are 3 m by 3 m.

As of Decem ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityUnits202220212020201920182017
Gold oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required3,4003,525
All production numbers are expressed as metal in concentrate.
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Operational Metrics:

Metrics202220212020201920182017
Daily processing capacity  ......  Subscription required  ......  Subscription required360 t360 t360 t360 t
Ore tonnes mined  ......  Subscription required  ......  Subscription required39,880 t52,185 t
Waste OP  ......  Subscription required  ......  Subscription required248,013 t183,450 t
Total tonnes mined  ......  Subscription required  ......  Subscription required
Tonnes processed  ......  Subscription required  ......  Subscription required39,880 dmt52,170 dmt31,230 dmt31,350 dmt
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Reserves at December 31, 2022:
Mineral Reserves are reported at a 2.0 g/t Cut-off.
Mineral Resources are estimated at 2.0 g/t Cut-off.

CategoryTonnage CommodityGradeContained Metal
Proven 32,039 t Gold 4.37 g/t 4,499 oz
Probable 21,715 t Gold 5.26 g/t 3,675 oz
Proven & Probable 53,754 t Gold 4.73 g/t 8,173 oz
Measured 403,724 t Gold 4.57 g/t 59,349 oz
Indicated 692,024 t Gold 4.32 g/t 96,045 oz
Measured & Indicated 1,095,748 t Gold 4.41 g/t 155,394 oz
Inferred 753,502 t Gold 3.44 g/t 83,447 oz

Commodity Production Costs:

CommodityUnits20222021202020192018
Cash costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,186 / oz  
All-in sustaining costs (AISC) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,579 / oz  
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Financials:

Units202220212020201920182017
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 3.6   4.3  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -0.7   1.2  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 0.8   0  
Operating Cash Flow M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -1.4   0.3  
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Water Supply
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Heavy Mobile Equipment:
HME TypeModelSizeQuantityRef. Date
Bolter ....................... Subscription required ....................... Subscription required Nov 14, 2022
Drill jumbo (single boom) ....................... Subscription required ....................... Subscription required Dec 31, 2022
Drill jumbo (two boom) ....................... Subscription required Dec 31, 2022
Load-Haul-Dump (LHD) 1.5 ....................... Subscription required Dec 31, 2022
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required Jan 31, 2023
Load-Haul-Dump (LHD) 4.6 cu. m ....................... Subscription required Dec 31, 2022
Truck (haul) ....................... Subscription required 22 t ....................... Subscription required Dec 31, 2022
Truck (haul) ....................... Subscription required 30 t ....................... Subscription required Dec 31, 2022
Truck (underground) ....................... Subscription required 14 t ....................... Subscription required Dec 31, 2022
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 4, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 11, 2023
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Staff:

EmployeesYear
Subscription required 2022
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Form 10-K 2022
Other 2022
Other 2022
Technical Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Form 10-K 2018
Corporate Presentation 2017
Form 10-K 2017
Form 10-K 2016
Form 10-K 2015
Press Release 2014
Technical Report 2013
Year-end Mineral Reserves 2013
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