Show U S helium supply adequate for defense WASH washington I 1 NDe despite spite the production last year of over cubic feet of light helium gas from from the governments plant at Aro arillo texas an adequate supply of the valuable gas for purposes of national defense remains for a ions iong tine time to come says the annual annu a report of at the secret secretary of the interior the united states holds a virtual monopoly in the world on the production of helium gas studies by the united states bureau of mines on the rock pressure of the gas in the field indicate that only slightly more than 2 per cent of the gas reserve has been used in the abe six years rears of operation of the plant |