Hydraulic Mining, Gold Run C.P.R.R. Cal.

Hydraulic Gold Mining, California.

Pipes that supply the water for hydraulic mining.

Group portrait of men posed on cars of mine railroad.

Group portrait of men posed on cars of mine railroad.

Hydraulic Mining, Cal.

Placer Mining, Cal.

Gold Bearing Pyramid, California.

Hydraulic mining in California.

Mosambique Tunnel.

Mosambique Tunnel.

Total Wreck Mine [tailings].

Total Wreck Mine [miners].

Total Wreck mine.

Inclines to the copper mines, Metcalf, Arizona.

Inclines to the copper mines, Metcalf, Arizona.

The Klondike. Prospector at Claim 29, above Hunker.

Claim 23 above Hunker. The Klondike.

Panning out the gold in the Klondyke [Klondike], Alaska.

Working No. 4 Bonanza, Klondike.

Working No. 4 Bonanza, Klondike.

Working No. 4 Bonanza, Klondike.

Working No. 4 Bonanza, Klondike.

Bonanza and Eldorado mines, where millions in gold were taken out. Klondyke [Klondike], Alaska.

Up Eldorado from Grand Forks, Klondike.