page_title: Site A/Plot M Disposal Site
hierarchical_section_title: Site A/Plot M Disposal Site
caption_attribution_description: English: Inspectors approach Plot M monument on April 19, 2006.
context_page_description: The Site A/Plot M Disposal Site is located within Red Gate Woods and situated on the former grounds of Argonne National Laboratory and its predecessor, the University of Chicago Metallurgical Laboratory in Cook County, Illinois and is part of the Palos Forest Preserve. The site contains buried radioactive waste from contaminated building debris, and the Chicago Pile-1, and Chicago Pile-3 nuclear reactors. "Site A" was an early Manhattan Project code for the facility. "Plot M" was later used for the disposal ground.
context_section_description: The Site A/Plot M Disposal Site is located within Red Gate Woods and situated on the former grounds of Argonne National Laboratory and its predecessor, the University of Chicago Metallurgical Laboratory in Cook County, Illinois and is part of the Palos Forest Preserve.  The site contains buried radioactive waste from contaminated building debris, and the Chicago Pile-1 (CP-1/CP-2), and Chicago Pile-3 (CP-3) nuclear reactors.  "Site A" was an early Manhattan Project code for the facility.  "Plot M" was later used for the disposal ground.
caption: Inspectors approach Plot M monument on April 19, 2006.
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