Preparations for a routine maintenance task may have led to an explosion at a U.S. Steel coal-processing plant near Pittsburgh that left two dead and sent 10 to hospitals, the company said Friday.

The Ducks face off against Wisconsin on Oct. 25, and game-goers are asked to wear tie-dye to the Grateful Dead-themed game.

According to Coast Guard Sector Miami, the sailboat—with five children and an adult counselor on board—sank after being hit by the barge.