Surface coal mines prior to 1950 in the USA were generally left without any reclamation.As government regulations advanced since then,mine operators were required to backfill the area and plant grasses or trees.After ...Surface coal mines prior to 1950 in the USA were generally left without any reclamation.As government regulations advanced since then,mine operators were required to backfill the area and plant grasses or trees.After the federal Surface Mining Control and Reclamation Act(SMCRA)was passed in 1977 in the USA,mine operators were required to conduct pre-mining analyses of the site and to designate a land use that could be achieved after mining.Successful reclamation,as needed to satisfy today’s societal demands,requires engineering,design,and purposeful reconstruction of the full mining disturbance,not just its surface,and control of waters leaving the mine site.Effective reclamation on modern American coal mines is fully integrated with the mining operation.A suitable and effective postmining land use that is sustainable for future generations is crucial to the long-term success and profitability of the mining business and to the future economic benefits of the landowner.Accepted post-mining land uses in the USA are:(1)prime farmland,(2)hay land and pasture,(3)biofuel crops,(4)forestry,(5)wildlife habitat,and(6)building site development.Policies and regulations for each post-mining land use were developed and practices to achieve successful and sustainable land uses were established.Post-mining conditions should provide ecosystem services and produce lands capable of supporting societal needs in the future.展开更多
文摘Surface coal mines prior to 1950 in the USA were generally left without any reclamation.As government regulations advanced since then,mine operators were required to backfill the area and plant grasses or trees.After the federal Surface Mining Control and Reclamation Act(SMCRA)was passed in 1977 in the USA,mine operators were required to conduct pre-mining analyses of the site and to designate a land use that could be achieved after mining.Successful reclamation,as needed to satisfy today’s societal demands,requires engineering,design,and purposeful reconstruction of the full mining disturbance,not just its surface,and control of waters leaving the mine site.Effective reclamation on modern American coal mines is fully integrated with the mining operation.A suitable and effective postmining land use that is sustainable for future generations is crucial to the long-term success and profitability of the mining business and to the future economic benefits of the landowner.Accepted post-mining land uses in the USA are:(1)prime farmland,(2)hay land and pasture,(3)biofuel crops,(4)forestry,(5)wildlife habitat,and(6)building site development.Policies and regulations for each post-mining land use were developed and practices to achieve successful and sustainable land uses were established.Post-mining conditions should provide ecosystem services and produce lands capable of supporting societal needs in the future.
