Tribune file photo
A handwritten note on the back of this1939 photo says: "Blasting at Bingham."
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this 1949 photo.
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this 1941 photo.
Tribune file photo
The original caption on this 1942 photo says: "A panoramic view of the Utah Copper Company's open cut min
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this 1952 photo.
Tribune file photo
The original caption on this 1939 photo says: "Ed Ruben, left, and Ben Conklin, riveters, hoist platforms
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this 1937 photo.
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this 1934 photo.
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this undated photo.
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this 1937 photo.
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this 1949 photo.
Tribune file photo
Employees of the Utah Copper Company, now known as Kennecott, are seen in this undated photo. Left to right th
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this undated photo.
Tribune file photo
The original caption on this 1940 photo says: "Circle shows location of blast which killed three men. Exp
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this undated photo.
Tribune file photo
A handwritten note on the back of this1939 photo says: "Blasting at Bingham."
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this 1949 photo.
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this 1941 photo.
Tribune file photo
The original caption on this 1942 photo says: "A panoramic view of the Utah Copper Company's open cut mine in Utah, the largest in the world, and showing the town of Bingham with its single street--known as the narrowest city in the world."
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this 1952 photo.
Tribune file photo
The original caption on this 1939 photo says: "Ed Ruben, left, and Ben Conklin, riveters, hoist platforms up to steel star in preparation for work."
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this 1937 photo.
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this 1934 photo.
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this undated photo.
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this 1937 photo.
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this 1949 photo.
Tribune file photo
Employees of the Utah Copper Company, now known as Kennecott, are seen in this undated photo. Left to right the men are James E. Mabey, B.D. Willes, J.E. Utley and D.R. Firman.
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this undated photo.
Tribune file photo
The original caption on this 1940 photo says: "Circle shows location of blast which killed three men. Explosion buried three Utah Copper company employees under tons of rocks."
Tribune file photo
The Utah Copper Company, now known as Kennecott, is seen in this undated photo.