National Geographic : 1944 Dec
Michigan Fights 679 Staff Photographer Willard R. Culver Bay City Machines a Landing Wheel Made of Magnesium Alloy, a Tough Lightweight Magic Dowmetal is Dow Chemical Company's answer to Elektron, German aviation's new structural metal. Two-thirds as heavy as aluminum alloy and one-fourth as heavy as steel, it has helped to give the Allies mastery of the air. In Michigan, Dow extracts magnesium from brine wells; in Texas it uses sea water as an inexhaustible mine. Even when cold, magnesium alloy is easy to work. Staff Photographer B. Anthony Stewart For an Aerial Torpedo's Price, General Motors Could Build Half a Dozen Cars For accuracy, a "tin fish" is balanced at final assembly in GMC's Pontiac Division.