... cancer in humans and are found in industrial and occupational settings such as coal mines, mills, granite quarrying and processing, crushed stone and related industries, and sandblasting operations. ... used in cotton dyes; as a coating for metals; as a drier in paints, varnishes, and pigment inks; as a colorant in certain permanent hair dyes (progressive dyes); in explosives; and in washes to ... ground water, and topsoil where it can be taken up by both land and water plants and, in turn, transferred to animals. Contaminated topsoil that allows uptake into tobacco plants may be indirectly...