http://www.etui.org/Topics/Health-Safety/News/Increased-risk-of-lung-cancer-among-bricklayers " Bricklayers are at increased risk of developing lung cancer, according
to the findings of an epidemiological study recently published in the
International Journal of Cancer. The risk of contracting lung cancer
increases in proportion to the length of time spent working in the
occupation. The authors see the probable cause as being building
workers' regular exposure to a cocktail of carcinogens that provokes
synergistic effects"
Read full news item at http://www.etui.org/Topics/Health-Safety/News/Increased-risk-of-lung-cancer-among-bricklayers - The full report can also be read from this news link .