Government surveys in early '90s showed uranium contamination in floor drains and soil. Federal cleanup completed in 1994. At least two series of tests on various processes for refining uranium compounds in 1954. Records indicate the process raised considerable amount of radioactive dust. Volume and duration of work unclear.
Records suggest limited potential for contamination because material was copper-coated.
No recent radiation surveys found for this site. Eliminated DE North Claymont Allied Chemical and Dye Research on extracting uranium from phosphoric acid, early 1950s. Records suggest only a few pounds of uranium concentrate were produced. In 1977, federal officials ruled that the limited potential for contamination made a radiation survey unnecessary. Eliminated FL Bartow Armour Fertilizer Works Research on extracting uranium from phosphoric acid, 1951-55.