... or volumeof a-naphthylamine, 3,30 -dichlorobenzidine (and its salts), ethyleneimine, b-propiolac-tone, 2-acetylaminofluorene, 4-dimethylaminoazo-benzene, or N-nitrosodimethyl-amine.The speci ... vermin(birds, rats, mice, etc.), and bacterial contaminants (sanitation and house-keeping items such as potable water, removal of industrial waste and sewage, food handling, and personal cleanliness ... intermittentnumbness and tingling in the fingers; skin that turns pale, ashen, and cold; and eventual loss of sensation and control in the fingers and hands. Raynaud’s syn-drome occurs due to...