YUKON-CHARLEY RIVERS The World Turned Upside Down: A History of Mining on Coal Creek and Woodchopper Creek, Yukon-Charley Rivers National Preserve, Alaska

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Coal Creek dredge, spring of 1936. Readily identifiable in this photograph are, on the upper deck, the bull gear, the two pulleys that power the lower bearing on the screen and the stern gantry which will support the stacker. On the lower deck (fore to aft — left to right) the Atlas diesel engine (without it's four cylinders), boiler and the small Atlas diesel engine used to power the pumps at the stern. The break in the hull at the left is intended to accommodate the digging ladder and bucket chain. (Bill Lemm Collection, NPS photo).