Mkango Identifies New Zones of High Grade Uranium, Tantalum and Niobium at Thambani http://www.marketwired.com/press-release/mkango-identifies-new-zones-of-high-grade-uranium-tantalum-and-niobium-at-thambani-tsx-venture-mka-2218110.htm CALGARY, ALBERTA--(Marketwired - May 24, 2017)