U.S. Geological Survey Open-File Report 93–0280, Version 1.0
This publication is a compilation of grade and tonnage data for major commodities produced from 3310 worldwide mineral deposits, grouped into 50 deposit types. The data were used to costruct grade and tonnage models published in works by Cox and Singer (1986), Mosier and Page (1988), and Bliss (1992).
of93-0280.pdf file (492 kB)
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