Compressed air explosion kills 20 workers constructing railroad tunnel under the Hudson River - 1880
Radio station WCFL, owned and operated by the Chicago Federation of Labor, takes to the airwaves with two hours of music. The first and only labor-owned radio station in the country, WCFL was sold in 1979 - 1926
IWW leads a strike at Hodgeman's Blueberry Farm in Grand Junction, Mich. - 1964
A die-cast operator in Jackson, Mich., is pinned by a hydraulic Unimate robot, dies five days later. Incident is the first documented case in the U.S. of a robot killing a human - 1984
- compiled/edited by David Prosten at Union Communication Services.