Maps > United States > Minerals |
A collection of Mineral Resources and Mining Districts in the United States for use in the K-12 classroom.
Production of Coal in the United States,
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Production of Petroleum in the United States,
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Production of Iron in the United States,
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The United States - Coal Fields,
1897 |
Coal Fields,
1898 |
Coal Regions,
1899 |
Iron Regions,
1899 |
Coal ,
1899 |
Iron Ore,
1899 |
Gold,
1899 |
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Maps > United States > Minerals |
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