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Ore Reserve Calculations

 Subject
Subject Source: Local sources

Found in 29 Collections and/or Records:

1231 -- Calculation: -- A: Hypothetical Bulk Mining Block -- B: Mined Ore -- C: Inter-Ore

 Item — Cabinet 13, Drawer: 9
Scope and Contents From the Collection:

The Homestake Mining Company Maps and Blueprints Collection contains a wide variety of maps, drawings, blueprints, and other documents relating to the company's operation. Blueprints consist of machines the Homestake Mining Company used and the buildings that they built. This collection also contains various geological, metallurgical, and engineering maps of the mine.

Dates: 1877 - 2007

1232 -- Bald Mountain Partners - Clinton Underground Workings, Bulk Mining Model, Assay Map; Fig. 16-A2

 Item — Cabinet 13, Drawer: 9
Scope and Contents From the Collection:

The Homestake Mining Company Maps and Blueprints Collection contains a wide variety of maps, drawings, blueprints, and other documents relating to the company's operation. Blueprints consist of machines the Homestake Mining Company used and the buildings that they built. This collection also contains various geological, metallurgical, and engineering maps of the mine.

Dates: 1877 - 2007

1342 -- Lower Contact Workings -- Bald Mountain w/ore reserve call

 Item — Cabinet 13, Drawer: 10
Scope and Contents From the Collection:

The Homestake Mining Company Maps and Blueprints Collection contains a wide variety of maps, drawings, blueprints, and other documents relating to the company's operation. Blueprints consist of machines the Homestake Mining Company used and the buildings that they built. This collection also contains various geological, metallurgical, and engineering maps of the mine.

Dates: 1877 - 2007

1343 -- Upper Contact Workings - Bald Mountain -- w/ore res.

 Item — Cabinet 13, Drawer: 10
Scope and Contents From the Collection:

The Homestake Mining Company Maps and Blueprints Collection contains a wide variety of maps, drawings, blueprints, and other documents relating to the company's operation. Blueprints consist of machines the Homestake Mining Company used and the buildings that they built. This collection also contains various geological, metallurgical, and engineering maps of the mine.

Dates: 1877 - 2007

1550 foot level, 9 Ledge, N83-84 Stope, Underground Ore Estimate File, 1992

 File — Box 5, Folder: 1
Scope and Contents

Homestake Ore Reserve file for the 1550 Level, 9 Ledge, N83-84 Stope. Used for Kadri's Study 8/92. Containing cross-sections, plan maps, stope ore back sample maps, and diamond drill holes used to make the ore estimate.

Dates: 1992

1700 foot level, 7 Ledge, N61-63 Stope, Underground Ore Estimate File, 1992

 File — Box 5, Folder: 2
Scope and Contents

Homestake Ore Reserve file for the 1700 Level, 7 Ledge, N61-63 Stope. Used for Kadri's Study 8/92. Containing cross-sections, plan maps, stope ore back sample maps, and diamond drill holes used to make the ore estimate.

Dates: 1992

1850 foot level, 7 Ledge, N56-59 Stope, Underground Ore Estimate File, 1992

 File — Box 5, Folder: 3
Scope and Contents

Homestake Ore Reserve file for the 1850 Level, 7 Ledge, N56-59 Stope. Used for Kadri's Study 8/92. Containing cross-sections, plan maps, stope ore back sample maps, and diamond drill holes used to make the ore estimate.

Dates: 1992

2300 foot level, 9 Ledge, N47-49 Stope, Underground Ore Estimate File, 1992

 File — Box 5, Folder: 4
Scope and Contents

Homestake Ore Reserve file for the 2300 Level, 9 Ledge, N47-49 Stope. Used for Kadri's Study 8/92. Containing cross-sections, plan maps, stope ore back sample maps, and diamond drill holes used to make the ore estimate.

Dates: 1992

4100 foot level, 11 Ledge, N19-21 Stope, Underground Ore Estimate File, 1992

 File — Box 5, Folder: 5
Scope and Contents

Homestake Ore Reserve file for the 4100 Level, 11 Ledge, N19-21 Stope. Used for Kadri's Study 8/92. Containing cross-sections, plan maps, stope ore back sample maps, and diamond drill holes used to make the ore estimate.

Dates: 1992

5750 foot level, 21 Ledge, 53-55 or 54-56 Stope, Underground Ore Estimate File, 1992

 File — Box 5, Folder: 6
Scope and Contents

Homestake Ore Reserve file for the 5750 Level, 21 Ledge, N53-55 or 54-56 Stope. Used for Kadri's Study 8/92. Containing cross-sections, plan maps, stope ore back sample maps, and diamond drill holes used to make the ore estimate.

Dates: 1992