In the first half of the 20th century, the United States was a minerals powerhouse. From 1910 to 1950, the country represented between 30 percent and 40 percent of total global mining production.
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In the first half of the 20th century, the United States was a minerals powerhouse. From 1910 to 1950, the country represented between 30 percent and 40 percent of total global mining production.
Read Full Article »
