Box 7
Container
Contains 123 Results:
Item 3: Effective Sealing of Abandoned Coal Mines Alleviates Drainage Problem, 1920
File — Box: 7, Folder: 11
Scope and Contents
Language: English.
Dates:
1920
Item 4: Reports of Investigations Working for the Miner's Safety, 1921
File — Box: 7, Folder: 11
Scope and Contents
Author: Dorsey A. Lyon
Format: Publication
Language: English.
Dates:
1921
Item 5: Reports of Investigations Miners' Field Day, 1921
File — Box: 7, Folder: 11
Scope and Contents
Author: D. Harrington
Format: Publication
Language: English.
Dates:
1921