Indochina Mining Corporation and Truong Son General Group Form Joint Venture Company for Nonferrous Mining in Northern Vietnam LOS ANGELES, CA and HOCHIMINH, VIETNAM--(Marketwire - February 9, 2009) - PHI Mining Group, Inc. (PINKSHEETS: PHIG), a majority owned subsidiary of Providential Holdings, Inc. (OTCBB: PRVH)...