Yankee Fork Gold Dredge - Stanley, Idaho

Situated on the Yankee Fork River, the Yankee Fork Gold Dredge is between the historic mining towns of Custer and Bonanza. It's recognized as the largest self-powered dredge in Idaho and stands as a well-preserved testament to early 20th-century gold mining technology. Constructed in 1940 by the Bucyrus-Erie Company for the Snake River Mining Company, the dredge operated until 1952. Measuring 112 feet long, 54 feet wide, and 64 feet high, with a weight of 988 tons, the dredge housed seventy-one 8-cubic-foot buckets, each weighing over a ton. Its operation relied on two 350 HP Ingersoll-Rand diesel engines. The dredge extracted gold from the riverbed using a continuous digging and separation process. The buckets on the rotating chain dug up the gold-bearing gravel, which was washed and screened onboard. A complex system of riffles and mercury traps aided in separating the gold. The Yankee Fork Gold Dredge Association, a volunteer-run organization, plays a vital role in preserving and showcasing the dredge. Visitors can explore the dredge, learn about its history, and view a picture gallery and artifacts.