REMOVE

1. Steam
2. Ore
3. Bulletin
4. Graves, C.P.

WHAT

1. Operations (5)
2. Smelter (2)

WHO

1. Bennett, P.P. (2)
2. Harris, L.A. (2)
3. Kelley, E.L. (1)
4. LaBranche, J.J. (1)
5. Lazenby, R.E. (1)
6. Noble, R.O. (1)
7. Osborn, A.L. (1)
8. Pumfrey, W.A. (3)
9. Reynolds, C.S. (1)
10. Shader, M.T. (3)
11. Smith, S. (5)
12. Young, W. (2)

WHEN

1. 1910s (5)