Show fabrication OF DOMESTIC TALC A study of the methods of beneficiation and fabrication of domestic jalcs into electrical ins insulator alator shapes is being made by the department deparini depart ni ent of the interior in cooperation with the american lava corporation at the ceradini ceramic C e experiment X ent of mines columbus ohio similar st station of the bureau materials are used larg largely rely in europe for this purpose ur pose but in regard ard to what have due du partly to a lack of information reg been held as secret processes and part partly ay to a lack of prop erly prepared raw material the american america n industry has been backa backward ard in its development |