The mill was built by Bill Keys, a local rancher, miner and character, using equipment moved from Pinon Wells. In the 1940's, Keys was involved in a dispute with Worth Bagley over access to the Wall Street Mill. Keys shot and killed Bagley in 1943 and placed a stone commemorating the event with the inscription: "Here is where Worth Bagley bit the dust at the hand of W. F. Keys, May 11, 1943.The marker is not a part of the Wall Street Mill historic district.
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The Wall Street Gold Mill is the only complete and virtually operable stamp mill in the region. Although this vernacular facility's two-stamp size is atypically small, its technology represents the classic California stamp mill.
Source: HAER