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Miscellaneous rotary drill holes, 1952-1956
Level of Description
File
Archival Collection
Blue Diamond Mine Corporate Records
Archival Component
Rotary drill holes mill construction, 1953 November
Level of Description
File
Archival Collection
Blue Diamond Mine Corporate Records
Archival Component
Joy rotary drill daily logs, 1951
Level of Description
File
Archival Collection
Blue Diamond Mine Corporate Records
Archival Component
Survey progess, 1947 November
Level of Description
File
Archival Collection
Blue Diamond Mine Corporate Records
Archival Component
Buckets and tonnage, 1962
Level of Description
File
Archival Collection
Blue Diamond Mine Corporate Records
Archival Component
California Portland Cement Company, downhole, 1957
Level of Description
File
Archival Collection
Blue Diamond Mine Corporate Records
Archival Component
Excavation projects, 1952
Level of Description
File
Archival Collection
Blue Diamond Mine Corporate Records
Archival Component
Gardner-Denver mold drill, 1959
Level of Description
File
Archival Collection
Blue Diamond Mine Corporate Records
Archival Component
Hydraulic boom assembly for AirTrac, Ingersoll-Rand, 1957
Level of Description
File
Archival Collection
Blue Diamond Mine Corporate Records
Archival Component
Cut-off calculations, 1958
Level of Description
File
Archival Collection
Blue Diamond Mine Corporate Records
Archival Component
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