Results: The OR for all construction workers combined was 1.11 (95 % CI: 0.90–1.38), based on 381 blue collar
construction workers. Analyses of specific exposures were hampered by small numbers and imprecise estimates.
While none of 20 occupational agents examined was significantly associated with lung cancer, the following agents
manifested non-significantly elevated ORs: asbestos, silica, Portland cement, soil dust, calcium oxide and calcium sulfate.