Tham khảo tài liệu 'risk management in environment production and economy part 7', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Risk Analysis in the Mining Industry 109 Fig. 3. Mining project process flow chart Mongolian case 110 Risk Management in Environment Production and Economy Once all the legal aspects are in place the company will starts it s mine planning including the buildings and infrastructure that is required to be built. These set of plans are often refered as the master plan of the mine. 3. The construction phase. The construction phase will start in accordance to the master plan of the mine. If necessary companies can acquire investments from an outside resource such as financial institutions. Frequently one of the sources for investment is to sell the project share or bond through broker companies at the stock exchange market. Large international investments in the mining field are regularly held in the Canadian British and Australian stock exchange markets. 4. The operational phase. This phase will begin under the following condition The main constructions for the mine such as the enrichment factory if necessary assembly accommodation facilities for the manpower are completed All machines and equipments had arrived on site The necessary manpower is acquired and trained. A typical mining operation involves extraction process where the mineral is extracted from the ground processing of the mineral and selling. The selling process may include transportaion to the buyer s market. During operational process a continious improvement is very important to lower bottlenecks reduce cost and increase efficiency. Furthermore in this phase the rehabilitation process is intensified. 5. The closure phase. The permanent closure of a mine involves re-grading and revegetation removal and disposal of stored fuels and chemicals structure tear down removal of roads and ditches capping of tailings waste detoxification and reestablishment of drainage ways United States Environmental Protection Agency 1997 . Many features of mines such as open pits waste dumps and impoundments of tailings are .
