Show get getting ting powerful gas from radium I 1 t aio so MW aph dr D C Q bardwell Bard wel of the research of mince mines department of the interior laboratory of the united URRO states bureau barei jhb th radburn Is con contained maln ed in ill the little eafe safe collection in radium at the aton are made at intervals lat erval of froia from four light of the picture bollt to ten under vacuum a and pit purified aided by an electrical day the caa a drawn i by liquid air re the and chemical ta method ethod and final fut ful la in it if 3 Is used in the purified gas very until AU in 1 but study of gas u reaction pow tir |