Search U.S. government technical reports digitized or harvested by TRAIL.
Pulmonary disease among miners in the Joplin district, Missouri, and its relation to rock dust in the mines :A preliminary report by
The mining and preparation of Tripoli
Sinking practice and costs at the Pim Shaft, St. Louis Smelting & Refining Works, National Lead Co., St. Francois, Mo.
Catalog of recorded exploration drilling and mine workings in the tri-state zinc-lead district, Missouri, Kansas, and Oklahoma :interim report