Show RADIUM A cleanup clean up of the radium at the plant of the national radium institute at denver colorado has been started and work is now being lone done along the line of finding the best method for final fractionation and cleanup clean up of all material of varied character which has accumulated during the running of the plant some of this material is very different from the ordinary sulphates which are obtained as a radium concentrate some material which is now being treated contains carbon lead chloride silica and barium sulphate the latter being only about 20 per cent of the total such material needs special treatment nearly ggs of radium element has been delivered luring during the month to the golden office for final fractionation some further work h has as been done on the solubility of radium sulphate in different concentrations of sulphuric acid this is a continuation of the same work which was reported on by dr lind at the meet meeting ing of the american chemical society at kansas city and has a direct bearing on the precipitation of radium from solutions carrying radium |