Talk to an 84 year-old man at the Lady Queen in Bismark a few years ago. Said he worked in th lead mines. He got "leaded" once. Not sure what that meant. I presume some sort of extraordinary exposure.
MSNBC - Life in Missouri’s Fading Old Lead Belt
MSNBC - Life in Missouri’s Fading Old Lead Belt
http://www.msnbc.com/msnbc/life-missour ... -lead-beltJust an hour south of St. Louis sits the Southeast Missouri Lead District, home to the largest lead deposits in the world. Some 150 years ago, the area boomed alongside its lead mines, an exploitation of natural resources that altered economic fortunes as well as the physical terrain. A particularly plentiful subdistrict now known as the Old Lead Belt thrived