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Rock-drills -- Diamond drilling

 Subject
Subject Source: Library of Congress Subject Headings

Found in 16 Collections and/or Records:

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
Found in: Homestake Adams Research and Cultural Center / 5043, Homestake Mining Company Maps and Blueprints Collection

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
Found in: Homestake Adams Research and Cultural Center / 5043, Homestake Mining Company Maps and Blueprints Collection

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
Found in: Homestake Adams Research and Cultural Center / 5043, Homestake Mining Company Maps and Blueprints Collection

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
Found in: Homestake Adams Research and Cultural Center / 5043, Homestake Mining Company Maps and Blueprints Collection

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
Found in: Homestake Adams Research and Cultural Center / 5043, Homestake Mining Company Maps and Blueprints Collection

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
Found in: Homestake Adams Research and Cultural Center / 5043, Homestake Mining Company Maps and Blueprints Collection

6350 foot level, 19 Ledge, N27-29 Stope, Underground Ore Estimate File, 1992

 File — Box 5, Folder: 7
Scope and Contents

Homestake Ore Reserve file for the 6350 Level, 19 Ledge, N27-29 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
Found in: Homestake Adams Research and Cultural Center / 5043, Homestake Mining Company Maps and Blueprints Collection

6500 foot level, 13 Ledge, N56-58 Stope, Underground Ore Estimate File, 1992

 File — Box 5, Folder: 9
Scope and Contents

Homestake Ore Reserve file for the 6500 Level, 13 Ledge, N56-58 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
Found in: Homestake Adams Research and Cultural Center / 5043, Homestake Mining Company Maps and Blueprints Collection

6500 foot level, Main Ledge, S92-94 Stope, Underground Ore Estimate File, 1992

 File — Box 5, Folder: 8
Dates: 1992
Found in: Homestake Adams Research and Cultural Center / 5043, Homestake Mining Company Maps and Blueprints Collection

6800 foot level, 17 Ledge, N37-39 Stope, Underground Ore Estimate File, 1992

 File — Box 5, Folder: 10
Scope and Contents

Homestake Ore Reserve file for the 6800 Level, 17 Ledge, N37-39 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
Found in: Homestake Adams Research and Cultural Center / 5043, Homestake Mining Company Maps and Blueprints Collection

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