BAYOMBONG, Nueva Vizcaya: The Department of Environment and Natural Resources (DENR) in Region 2 (Cagayan Valley) has told two mining companies to immediately turn over all cut logs or harvested timber to the department for safekeeping. Gwendolyn Bambalan, DENR-Region 2 executive director, said the cut logs and harvested timber by mining companies in Cagayan Valley must all be properly stockpiled in a safe location to preserve their economic value.