Regulations governing administration of Longshoremen's and harbor workers' compensation act of Mar. 4, 1927, as amended, effective May 31, 1938, us amended to Dec. 10, 1948; Regulations governing administration of extension of Longshoremen's and harbor workers' compensation act to persons engaged in employment outside continental United States, effective Apr. 3, 1943, as amended to Oct. 7, 1950.