1. It was finally used eventually used for spinning and weaving gas mantles . 2. Thorium gas mantle is a portable source of light that requires no electricity. 3. The gas mantle boosted the luminosity of utility lighting and of kerosene lanterns. 4. Half of this thorium produced is used in gas mantles . 5. Gas mantles are impregnated with the same radio active thorium.6. In 1891 the gas mantle was invented by the Austrian chemist Carl Auer von Welsbach. 7. About half of the produced thorium is used as the light-emitting material of gas mantles . 8. As well as his own company, it was specialized in chemical products and gas mantles . 9. The company soon had 300 employees and produced about 30, 000 gas mantles a day. 10. After arriving in the New York area, Washington founded a company producing kerosene gas mantles .
