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MAJOR W. E. WILLIAMSON CHEMICAL EXPERT UNITED STATES ARMY AT CAVE DURING THE BLEACH SLURRY FLOODING OPERATION. en OKUNOSHIMA JAPAN MAJOR WILLIAMSON CHEMICAL EXPERT UNITED STATES ARMY AT CAVE DURING THE BLEACH SLURRY FLOODING OPERATION THE CANVAS HOSE WILL BE REMOVED FROM THE APERTURE IN THE CONCRETE WALL BEHIND WHICH TOXIC SMOKES