A LARGE SHAFT WELDED BY THE THERMIT PROCESS

Protruding metal is that which flowed up into gate and riser. It is cut away by the gas torch to leave a neat weld.

Courtesy of the American Machinist

CUTTING UP THE OLD BATTLESHIP MAINE WITH AN OXY-ACETYLENE GAS TORCH

Picture shows end of boat crane over exploded magazine, which was cut off in fifteen minutes.