BooksSitemapTechnology & EngineeringMiningY
Yacimientos de scheelita en la parte norte de la Sierra de Juárez by Carl Fries, Eduardo Schmitter, Geological Survey (U.S.) - 1945 - 43 pages
Yellow Pine Basin by Henry G. Catlin - 1897 - 214 pages
Yieldable steel arches and yieldable steel ring supports in metal mines by Nils A. Eilertsen - 1962 - 55 pages
Yielding steel posts by John P. Dunford, Laurin N. Henton, United States. Bureau of Mines - 1989 - 19 pages
You Can Find Gold by Charles Garrett, Roy Lagal - 1995 - 140 pages
You Can Find Gold by Charles Garrett, Roy Lagal - 1995 - 140 pages
Young America and Australian gold by Eli Daniel Potts, Annette Potts - 1974 - 299 pages
Yugoslav metallurgical industry by Ivan Avsenek - 1955 - 137 pages
Yukon placer mining and exploration, 1985-1988 by W. P. LeBarge, S. R. Morison - 1990 - 151 pages
Yukon Territory, Canada by Yukon Territory. Commissioner - 1905 - 32 pages