Mining and Mineral Development in the National Parks

1991. Mining and Mineral Development in the National Parks

Contrary to popular belief, there IS mining and mineral development in our National Parks. The table on back shows the number of operations as of January 1, 1991. The following definitions will help explain the data in the table.

Type

Generic Dataset

Date of Issue

1991-01-01

Units

AKR , MIDN , MWR , NCR , PWR , ROMN , SER

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