Gas Explosion Works Havoc The explosion on Monday morning of a huge gas tank in the Northside, Pittsburgh, wrought fearful havoc. The death list is known to be 26, and may reach 30. Nearly 500 persons were treated for injuries. The Equitable Gas Co.'s loss is $1,500,000. The Pittsburgh Clay Pot Co.'s plant nearby, was wrecked, and an entire section of the city was laid in ruins. Thousands of windows in the heart of Pittsburgh were shattered. Men went to work repairing the tank at 8 a.m. Forty-three minutes later as the workers handled their blow torches on the steel framework the shock came. Eyewitnesses said that the tank, with a capacity of 5,000,000 cubic feet, the largest natural gas tank in the world shot into the air like a balloon. A ball of fire traveled higher than the tip of Mt. Washington, across the Ohio river from the scene. Sections of the steel framework went up hundreds of feet to crash through roofs and into the streets. Men heroically went to the rescue as the injured men, women, and children, many with blood streaming from cuts and other injuries, ran screaming through the streets as if mad. Rescuers carried the injured through water waist deep. Tottering walls menaced them. Dangling electric wires sputtered on all sides. Yet those engaged in the rescue work forgot their own danger in their feverish efforts to aid others. One rescuer lost his life as a wall toppled. The Red Cross and the Salvation Army established first-aid stations. Here scores of persons were given first-aid attention. Many doctors braved the peril of the region, to seek out and help victims. A former McDonald resident, Mack BEAVER, is one of the dead.