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MAR 20 1979, MAR 20 1980; Two Men At Construction Site; when the exploded Thursday construction site at 5050 S. critical condition Intestinal injuries at Center was Jef Clemons, 35, of 2611 St. Leonard Touchstone, 38, of 4728 S. Irving St., Englewood, was in serious condition with fractures and facial cuts. Assistant Fire Chief F. H. Torkelsen said it appeared the two men were filling the tank with air from a compressor to check it for leaks when a connection was torn from the compressor by the high pressure.; (Photo By Glen Martin/The Denver Post via Getty Images)