TRACY,

http://www3.gendisasters.com/taxonomy_menu/2 “Gendisasters” Click the state on the left, then Mining Explosions and Accidents on the right

This is a newspaper article about the 1895 accident.

From Jerry,
http://www.genealogy.com/users/s/h/e/Jerry-Sherard/ “Mining Accidents U.S., Canada, New Zealand and Australia”