United States. Bureau of Mines. Chazy School Collection (Library of Congress) DLC moving image Documentary films. lcgft Feature films. lcgft Nonfiction films. lcgft [United States : s.n., 1921?] eng Shows the operation of asbestos mines (in Arizona and Canada) and factories (in New Jersey and New Hampshire) of Johns-Manville Co. Copyright: no reg. LC dupe neg is reduction from 35 mm. Bureau of Mines film no. 74, according to National Archives catalog card. Source used: 1001 films, 1922, p. 93. Chazy School Collection. Chazy School Collection. Chazy School Collection. H.W. Johns-Manville Co. Asbestos. Manufacturing processes. Story of asbestos https://hdl.loc.gov/loc.mbrsmi/ntscrm.02034334