H1. Below Ground Waste Disposal Silos. These concrete domes, each eight feet in diameter, form caps for underground silos 15 to 20 feet deep that contain radioactive laboratory equipment, construction debris, and dry wastes contaminated principally with cesium-137, strontium-90, and cobalt-60. The wastes were buried here between 1986 and 1993. Long-term groundwater monitoring of this area will be required for decades. Melton Valley Area, Solid Waste Storage Area 6, Oak Ridge Reservation, Tennessee, 10 January 1994.
These photographs by Robert Del Tredici are protected by copyright and are available for purchase as high-quality digital prints on archival paper or as silver gelatin prints from bdeltredici@hotmail.com.