On June 22, eighteen coal miners at the Quecreek Mine in Lincoln Township, Somerset County, Pennsylvania, owned by Black Wolf Coal Company accidentally dug into the abandoned, poorly documented Saxman Coal / Harrison #2 Mine, flooding the room and pillar mine with an estimated 75 million gallons of water. Both the Saxman Mine and Quecreek Mine are in the Upper Kittanning coal seam. The Upper Kittanning seam locally ranges in thickness from and dips 1.7 to 2.3 degrees (3 to 4 percent) to the northwest.