About
Description Greenstone Resources Corporation (GRC) is a Philippine mining company that owns and operates the Siana Gold Project in Surigao del Norte. It is a wholly owned subsidiary of TVI Resource Development Philippines Inc. (TVIRD) and is engaged in the exploration, development, extraction, and production of gold and silver while implementing responsible mining and environmental stewardship programs.
Main Location
Barangay Cawilan, Tubod, Surigao del Norte, Surigao 8406, Philippines