REMOVE

1. Operations
2. Cherry Creek
3. Warm Springs
4. Backe, C.W.

WHAT

1. GMO (1)
2. Greek American Mines Co. (1)
3. Ore (1)
4. Structures (1)

WHO

1. Cannon, L.G. (1)
2. Davidson, H.A. (1)
3. Duddleson, T.J. (1)
4. Durkee, R.S. (1)

WHEN

1. 1910s (1)