Records suggest workers faced substantial radioactive and toxic exposures. Properties redeveloped after work ended. Grasselli Research Laboratory Testing of methods for fabricating uranium metal cylinders, early 1940s. No waste disposed of on site. 1976 survey found no significant contamination.
Records show extremely high worker exposures to radioactive dust and toxic fumes.
Extensive contamination remains in building and grounds. No cleanup scheduled. OH Cleveland Horizons Refining and conversion of thorium compounds into metal, 1940s-1950s. Records show operation generated substantial radioactive dust. OH Cleveland Clevite Processing of uranium and thorium compounds, 1956-63, including manufacture of enriched uranium fuel for nuclear reactors.