| http://www.w3.org/ns/prov#value | - OSHA estimates nearly one million construction workers are occupationally exposed to lead, (17) a substance known to be ototoxic. (18,19) Solvents, such as toluene and xylene, have been implicated as causes of occupational hearing loss, and, particularly when combined with noise, appear to exacerbate the hazard to hearing. (20-23) In a report on construction laborers, Burkhart et al. (24) placed t
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