Firefighters spray water on a burning pile of magnesium Monday at Scrap-All Inc. in Tampa. The fire in the Ybor City neighborhood started by accident about 11 a.m. at the scrap yard, 2801 E Fourth Ave., when a welder was cutting pieces of aluminum, according to Tampa fire Chief Bruce Savage. Firefighters could only pour water on the 200-pound pile of magnesium and wait for the fire to die out.