There are two disposal cells at the former uranium mining and processing center near the town of Maybell, in the northwestern corner of Colorado. The east cell is a repository for wastes from the uranium mine and mill that operated here from 1955 to 1964, producing 2.6 million tons of ore. The west cell contains radioactive materials generated by operations that continued until 1994, by the company that operated the site, Umetco. The west cell contains two million tons of tailings. Between the east and west cells are pits from the former uranium mines.
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