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Displaying results 805031 - 805040 of 866540

Mine inspection report, 1954

Level of Description

File

Archival Collection

Blue Diamond Mine Corporate Records

Archival Component

Gardner-Denver drilling equipment bulletins, undated

Level of Description

File

Archival Collection

Blue Diamond Mine Corporate Records

Archival Component

Koehring 1066D hydraulic hoe operators manual, 1978

Level of Description

File

Archival Collection

Blue Diamond Mine Corporate Records

Archival Component

"Ruth" and "Margo" claims, 1967

Level of Description

File

Archival Collection

Blue Diamond Mine Corporate Records

Archival Component

Patent, no gypsum on 10-acre parcel, 1963

Level of Description

File

Archival Collection

Blue Diamond Mine Corporate Records

Archival Component

Internal company memos, gypsum deposits Nevada and Alaska, 1960

Level of Description

File

Archival Collection

Blue Diamond Mine Corporate Records

Archival Component

Maps, production, stripping, and United States Geologic Survey quadrangle, 1963-1978 and undated

Level of Description

File

Archival Collection

Blue Diamond Mine Corporate Records

Archival Component

Rock inventory, 1978-1981

Level of Description

File

Archival Collection

Blue Diamond Mine Corporate Records

Archival Component

Underground cave-in, 1973

Level of Description

File

Archival Collection

Blue Diamond Mine Corporate Records

Archival Component

Five-year mine plan, 1973-1981

Level of Description

File

Archival Collection

Blue Diamond Mine Corporate Records

Archival Component