REMOVE

1. Coal
2. Operations
3. Roper, F.
4. 1910s

WHAT

1. GMO (5)
2. Structures (5)
3. Steam (2)

WHERE

1. East Ely Yard (2)
2. Cobre (1)
3. Decoy (1)
4. Goshute (1)

WHO

1. Boese, P.R. (5)
2. Cannon, L.G. (5)
3. Davidson, H.A. (5)
4. Douglas, T. (1)