In the early to mid-20th Century, it was becoming increasingly apparent that the metal lead had a Jekyll and Hyde persona. At that time, lead was a common and useful additive to paint and gasoline among other uses. However, evidence mounted, implicating lead as the cause of many health problems (see related blog). In adults, low levels of chronic, non-work-related lead exposure were linked to kidney damage, heart disease, infertility, and neurological disorders.[1] Symptoms of lead poisoning were especially apparent among lead miners and smelters. [2] Something Needed to Change Increasing health concerns eventually led to federal regulations requiring industries
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