The Porter Tunnel mine disaster occurred on March 1, 1977, near Tower City, Schuylkill County, Pennsylvania. Related photos appeared in editions of the Evening Herald, Pottsville, on subsequent dates.
This sketch shows the layout of Porter Tunnel where the mining drama is taking place. The flood of water entering the mine is believed to have entered abandoned workings on the mountain. (UPI)
__________________________________________
From Newspapers.com.
Corrections and additional information should be added as comments to this post.