Exploration of the Big Four Zinc-silver Mine, Summit County, Colo R. B. McCulloch Published: 1946 Total Pages: 20 Get eBook
Geology and Ore Deposits of the Leadville Mining District, Colorado Samuel Franklin Emmons Published: 1927 Total Pages: 462 Get eBook
Geology and Coal Resources of the Walsenburg Area, Huerfano County, Colorado Ross B. Johnson Published: 1958 Total Pages: 246 Get eBook
A Reconnaissance of Some Mining Camps in Elko, Lander, and Eureka Counties, Nevada William Harvey Emmons Published: 1910 Total Pages: 154 Get eBook
Monthly Chapter of Report ... of the State Mineralogist Covering Mining in California and the Activities of the State Mining Bureau Published: 1923 Total Pages: 332 Get eBook
Biennial Report of the State Inspector of Mines Nevada. Office of the State Inspector of Mines Published: 1919 Total Pages: 1046 Get eBook
Annual Report of the Chief Inspector of Mines for the Year Ending ... Ohio. Inspector of Mines Published: 1905 Total Pages: 906 Get eBook
