RI 4332 Investigation Of The Dempsey Zinc-Lead Mine Washington County, Mo.
- Organization:
- The National Institute for Occupational Safety and Health (NIOSH)
- Pages:
- 22
- File Size:
- 6471 KB
- Publication Date:
- Jan 1, 1948
Abstract
The Dempsey tract in Washington County, Mo., had a small production of lead-zinc ore from shallow workings. Old dumps from early-day lead mining contain about 25,000 tons of ore averaging about 3 percent combined zinc and lead. Because of the urgent war requirements for lead and zinc, the Dempsey property was examined by Otto Ruhl, formerly an engineer of the Bureau of Mines in August 1942 and selected for further investigation by churn drilling twenty holes totaling 1,309 feet were bored in the fall of 1943. The results of the work are presented in this paper.
Citation
APA: (1948) RI 4332 Investigation Of The Dempsey Zinc-Lead Mine Washington County, Mo.
MLA: RI 4332 Investigation Of The Dempsey Zinc-Lead Mine Washington County, Mo.. The National Institute for Occupational Safety and Health (NIOSH), 1948.