Quarry and Uranium Mines
There are other types of mines besides placer and lode in Park County, as well, such as the quarries. A quarry is another type of mining process which removes ore from just under the earth’s surface. This type of mining is used to extract marble, fossils, gravel, sand, and stone. You can see massive quarries to the west as you drive along Highway 9 from Fairplay to Alma. Surface mines generally produce 70% of mineral ores.
Uranium lode mines exist in Park County as well. The uranium mine just south of the town of Garo, called Duvall Discovery or Shirley May Mine, ran for thirty years off and on between 1919 and 1952.
The uranium was found while miners were searching for copper deposits. In-situ mining techniques are used for extraction by drilling small holes into the deposit and pouring a man-made solution to dissolve it. Uranium was found in the region by accident when prospectors were searching for copper.
In his 2002 interview with Cara Doyle, Robert Robeson described the dangers and health lasting impacts from working in a uranium mine: