Control of Underground Water
File consists of an essay titled Control of Underground Water. Contains original diagrams
Gauvin, M.J.
The Groundhog River Gold Rush
File consists of an essay titled The Groundhog River Gold Rush. Contains original diagrams
Harkness, T.J.
Sinking Vertical Shafts in Rock
File consists of an essay titled Sinking Vertical Shafts in Rock. Contains original diagrams
Koski, J.
Sampling of Ore Deposits
File consists of an essay titled Sampling of Ore Deposits. Contains original diagrams
Warren, R.W.
Shaft Sinking at Porcupine Reef
File consists of an essay titled Shaft Sinking at Porcupine Reef. Contains original diagrams and photographs
Smith, J.R.
The New Helen Mine Property
File consists of an essay titled The New Helen Mine Property. Contains original diagrams and photographs
Bruce, D.N.
Rock Bursts – A Discussion
File consists of an essay titled Rock Bursts – A Discussion. Contains original diagrams
Hart, D.E.