Rift Valley Copper Mining | Limited
The Great Rift Valley Copper Deposit. The Great Rift Valley Copper Deposit Limited (RVCUK) is a British company that has a whollyowned subsidiary, Rift Valley Copper Limited (RVCK). RVCK, is a Kenyan registered company which holds the exploration rights to a resources tenement in the Kitui County of Kenya covering an area of approximately 150 km2.