SEAFARER Site Survey, Upper Michigan Region. Book 9. Mineral Extraction Data.
GTE SYLVANIA INC NEEDHAM HEIGHTS MASS COMMUNICATIONS SYSTEMS DIV
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Iron ore mining is the major industry in the Study Area. Numerous occurrences of other metallic minerals are documented, but no mine is currently producing ore from any of these deposits. Six mines are currently producing iron with a total current capacity of 17 million long tons of pellets and ore. Most of the iron production for the next 25 years will be from the Marquette Basin. Author
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