Arthur J. Theis, born 1898, worked for the Acaconda Mining Company as a field exploration engineer in the 1940s and early 1950s. He also owned and operated several of his own gold mines. In 1926 he began mining in Alaska and Canada, and from 1938 to 1942 he was co-owner and operator of the Boaz Mine in Norris, Montana. From 1943 to 1945 he was co-owner and operator of Darwin Mines in Darwin, California, and at this time became involved in the Buffalo Mine in Baker, Oregon, which he eventually owned and operated. All of these mines and several more that Theis became owner, operator, or shareholder of were gold mines. His mining interests expanded to extracting other minerals once gold mining was no longer profitable in the 1950s. Theis died in 1973.
From the description of Arthur J. Theis papers, 1882-1973. (University of Wyoming, American Heritage Center). WorldCat record id: 57196097
