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approximate original contour

The surface configuration achieved by backfilling and grading of the mined area so that the reclaimed area, including any terracing or access roads, closely resembles the general surface configuration of the land prior to mining and blends into and complements the drainage pattern of the surrounding terrain, with all highwalls, spoil piles, and coal refuse piles eliminated.

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创建者

  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 分数
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