BRAIDWOOD (Illinois Route 113 on the east side of Coal City) 
The memorial pertains to the Diamond Mine disaster of 1883 in which 74 miners were drowned underground. It was erected by the United Mine Workers of America in 1895. The disaster and memorial are discussed by R. G. Bluemer in his book Black Diamond Mines (Grand Village Press, 2001). We have not yet had the opportunity to visit the site.  SOURCE: By Maple55000 – Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=113892371