The Barnes-Hecker Mine in Ishpeming Township caved in on November 3, 1926, killing 51 men.

Sources

• Memorial To Mark 1926 Mich. Mining Disaster, CBS Detroit / AP, August 20, 2011
• Back Then by Erin Elliott, Marquette Monthly, November 2004
• No Tears in Heaven, Thomas Friggens, 1988; 3d edition, 2002; Worldcat
• Barnes-Hecker: Memories of a Misfortune, documentary, WNMU-TV, 2001
• Ishpeming Iron Ore newspaper, November 6, 1926
• Barnes-Hecker Mine, Mindat