Show helium supply Is increasing wash washington I 1 agton sufficient cien t helium gas to inflate both navy dirigibles the alio los angeles and the shenandoah will be available by july I 1 it if the present rate of production continues tile the only supply of helium in the united states Is that turned out at the helium production plant at forth worth texas present operation of tills this plant Is under the joint direction of the army and navy and helium IF allocated to the two services according as aa it Is needed in their lighter than air craft until july I 1 the present system by which either the los angeles or the shenandoah must lie idle deflated while its companion ship takes the air will continue the plant la Is working at capacity but the process ot of helium production is a complicated one |