Show airplane parts X rayed in testing metals xray X ray shows show sup up interior bubbles and cracks otherwise never suspected until some machine smashes up under stress all airplane parts subject to strain are X rayed navy inspectors xray X ray ing a turbine for a destroyer dis covered that a contractor had filled a crack in a casting with zi a metal plug and hidden the trick with a plating of metal all steam tubing for warships is examined by xray X ray bursting steam lines might cripple a ship in action mean horrible death for men arien below decks one of the biggest jobs ever tackled speaking of sheer physical dimensions was the examination of 80 miles of welds on boulder dam penstocks pen stocks |