REMOVE

1. Mine
2. Liberty Pit
3. Crew
4. Ely
5. McGill
6. Smelter
7. Ruth

WHAT

1. Deep Ruth (1)
2. Haul Truck (1)
3. KCC (1)
4. Kennevadan (1)

WHERE

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

WHO

1. Butterman, L. (1)
2. Jackling, D.C. (1)
3. Kefauver, K.E. (1)
4. MacDonald, D.C. (1)
5. O'Shaughanessy, M.J. (1)

WHEN

1. 1960s (1)