A Prejudice Which May Cloud the Mentality: The Making of Objectivity in Early Twentieth-Century Occupational Health

Today, environmental health professionals assess hazards in the workplace or the outside air by comparing sampled levels against official Threshold Limit Values (TLV's). But before today's reliance on quantitative tools for correlating atmospheric chemical levels to disease, industrial health practices were neither primitive nor unscientific. Medical and scientific researchers wrote at once for physicians or hygienists and for those without scientific training. Their knowledge itself remained closely tied to preventive interventions as well to curative ones. A quantitative chemical approach to occupational disease took shape following World War I, with the advent of a new community of experts, centered in the public health schools, in company medical clinics and in state divisions of industrial hygiene.