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    what is a grader for complex surface mining for coal Once coal removal is complete, final regrading takes place and the area is revegetated. The operation is required to reclaim the mine to "AOC" or "approximate original contours" unless this requirement Once coal removal is complete, final regrading takes place and the area is revegetated.

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    Layers of rock and dirt above and between the coal seams are removed. Coal seams are removed with excess soil and rock placed in an adjacent valley. Large scale earth moving equipment is used to excavate and remove coal from lower layers. The equipment used depends on the method and scale of the surface mining method being employed.

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    2020-6-27  Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine is a 'pit', and ...

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  • NORTHERN COALFIELDS LIMITED

    2018-8-29  under Coal Bearing Areas (Acquisition and Development) Act, 1957 , 474.13 Ha. under Land Acquisition Act, 1984, 391.25 Ha. unde r Direct Purchase/ Ex. Order and 303.88 Ha. under Lease. **Other Mining Infrastructure include Enabling assets i.e. P.W.D. Road at Khadia unit of Rs. 12.78 crores

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    2020-4-27  10 feet from the outside edge of the Haul Road surface. The signal height shall be no less than 9 feet or more than 15 feet above the Haul Road surface. Approval for use of traffic control signal lights will be approved on a case by case basis only by Airfield Operations. 4. Flaggers, wearing bright reflective outer clothing, shall be posted at ...

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    2020-4-27  10 feet from the outside edge of the Haul Road surface. The signal height shall be no less than 9 feet or more than 15 feet above the Haul Road surface. Approval for use of traffic control signal lights will be approved on a case by case basis only by Airfield Operations. 4. Flaggers, wearing bright reflective outer clothing, shall be posted at ...

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  • NORTHERN COALFIELDS LIMITED

    2018-8-29  under Coal Bearing Areas (Acquisition and Development) Act, 1957 , 474.13 Ha. under Land Acquisition Act, 1984, 391.25 Ha. unde r Direct Purchase/ Ex. Order and 303.88 Ha. under Lease. **Other Mining Infrastructure include Enabling assets i.e. P.W.D. Road at Khadia unit of Rs. 12.78 crores

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  • Method Statement for Excavation Works

    2020-6-22  5.2.5 For foundation, as soon as the excavation reaches the required depth/elevation the surface shall be leveled and shall be compacted to 95 % of maximum dry density or MDD. 5.2.6 Before the compaction starts, it shall make sure that the excavated level is free from standing water or excessive moisture content.

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