Search U.S. government technical reports digitized or harvested by TRAIL.
Analyses of Mine and Car Samples of Coal Collected in the Fiscal Years 1911 to 1913
Gas Masks for Gases Met in Fighting Fires
Low-Temperature Carbonization of Coal
Accelerated Laboratory Test for Determination of Slacking Characteristics of Coal
Annual Report of Research and Technologic Work on Coal: Fiscal Year 1941
Analyses of West Virginia Coals
Recent Developments in Fuel Supply and Demand
Annual Report of Research and Technologic Work on Coal: Fiscal Year 1942
Annual Report of Research and Technologic Work on Coal: Fiscal Year 1943
Annual Report of Research and Technologic Work on Coal: Fiscal Year 1946