Online resource; title from PDF title page (USGS viewed Mar. 17, 2017).
Includes bibliographical references and index.
Introduction -- General geology -- Geologic history -- Mineralogy -- Ore deposits -- Mine descriptions -- Guides to ore and future of the district -- Production of mines in the district.
Use copy Restrictions unspecified star MiAaHDL
Electronic reproduction. [S.l.] : HathiTrust Digital Library, 2010. MiAaHDL
Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002. http://purl.oclc.org/DLF/benchrepro0212 MiAaHDL
digitized 2010 HathiTrust Digital Library committed to preserve pda MiAaHDL