Spread beneath 200 acres and reaching depths of more than 1,500 feet, the Coles Hill ore deposit is the largest undeveloped uranium deposit in the United States and the seventh largest in the world. Containing approximately 119 million pounds of uranium oxide, the deposit is estimated to be worth more than $7 billion. Geologists of Marline Uranium Corporation first discovered the deposit in 1978.
In 1982, Marline conduced exploratory test drilling at the site to assess the size, grade, and other characteristics of the ore body, and Virginia Uranium verified and expanded Marline’s studies in 2007. Both companies removed extensive core samples from the ore body, samples which have since been safely stored both on site and at the Virginia Museum of Natural History.
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