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![]() Based on the information provided, OSHA/MSHA have advised EPA that it appears that extraction has stopped since the coal reserves appear to be depleted. Since the mine is not in operation now, is the activity involving treatment of the water with ammonia regulated under Mine Safety and Health Administration (MSHA)? Does MSHA have jurisdiction of the mine facility now even though it is not operational?Īs interpreted by OSHA/MSHA, the purpose of the Federal Mine Safety and Health Act of 1977 is to protect the health and safety of miners working at underground and surface coal and other mines. When it was operational, the mine was operated as a surface extraction operation. The mine is no longer operational as the coal deposits were depleted. Ammonia is used to treat surface water runoff (raise the pH of the effluent). The machinery has strong geographical environment adaptability, simple structure, easy maintenance, it is an ideal machine of battlefield and the river dredging, and can be used for mining salt ponds and offshore rivers dredging, hard bed mining, channel improvement development, it has many advantages of reliable performance, long life, low cost and large working(500-3000 cubic meters / day).Digging sand separated by screening sandy is pure, no impurities, it is the ideal sand of construction industry, cement pre-operation.The owner of a coal mine is maintaining one bulk anhydrous ammonia tank and satellite ammonia tanks because of an agreement with the State pursuant to environmental regulations concerning acid mine drainage. ![]() And it can be installed on the pebble crusher broken to the second washing. One-time to produce qualified, clean gravel products, equipped with power is diesel or motor, it can screen sandy stone, cleansing work. This machine is a chain bucket sand mining machinery, which can complete the yellow sand extraction, screening, cleaning, grading and other at the same time. ![]() Chain Bucket Dredger is one of the company's main product, the main technical personnel took part in research and development of sand dredging ship, and transform many times to make it more perfect. ![]()
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