1990: With the passing of the Uranium boom, Anderson opens a permanent office location in Grants, New Mexico to help close the once largest open-pit uranium mine in the world. The project later would receive a regional award of distinction from the American Council of Engineering Companies.
About the Site Reclamation: Assisting the Atlantic Richfield Company, Anderson Engineering began decommissioning the mill in 1989 and site reclamation in 1991. By 1995, all mill tailings,
contaminated soils, demolished mill structures, and contaminated vicinity property materials were encapsulated
in six onsite disposal areas. These areas are the main tailings disposal cell, which comprises the acid tailings and the
contiguous south bench disposal area; the carbonate tailings cell; an asbestos disposal area; a disposal area that contains a polychlorinated biphenyl (PCB) disposal cell; and two small landfills. More than 90 percent of the total tailings material is encapsulated in the main tailings disposal cell. Source: Office of Legacy Management; Department of Energy