17/03/2020 · 3. Based on the mining area reserved, a CoW appliion is submitted to the Department. The area reserved is usually 250,000 hectares for general mining and 100,000 hectares for coal mining. 4. Before a CoW appliion is submitted to the Department, the applicant has to pay a refundable deposit of IDR 10,000 per hectare for the mining area ...