Title from album note Additional information from album: During 1916 and 1917, numerous cave-ins were occurring in the upper levels of the mine; in order to protect the Treadwell, Mexican, and "700" mines, the bulkhead was constructed in the...
Title from album note Additional information from album: The Treadwell, "700," and Mexican mines were all flooded, building up air pressure, which exploded the Mexican shaft house; the Ready Bullion mine was protected by a newly constructed...