The Coal Creek Historic Mining District (Hän: Zhùr näddhä`ww juu) is a gold-mining area in the Yukon-Charley Rivers National Preserve of Alaska dating from the 1930s. It features a gold dredge and a supporting community of several dozen buildings, established by mining entrepreneur Ernest Patty. The dredge is the most significant relic in the district. It is a medium-sized diesel-powered floating dredge. It was built by the Walter W. Johnson Company of Oakland, California and shipped in pieces to Skagway, then by rail to Whitehorse, Yukon Territory and by barge down the Yukon River.