REMOVE

1. Ore
2. Operations
3. Smelter
4. Copper Flat

WHAT

1. Crew (2)
2. Steam (2)
3. Bulletin (1)

WHERE

1. East Ely (3)
2. Cobre (1)
3. Currie (1)

WHO

1. Fravel, H.A. (3)
2. Lake, G.F. (2)
3. Peterson, H.M. (2)
4. Beem, H.J. (1)
5. Colaizzi, C. (1)

WHEN

1. 1940s (2)
2. 1950s (1)