Appalachian Coal Mining believes that it can increase labor productivity and, therefore, net revenue by reducing air pollution in its mines. It estimates that the marginal cost function for reducing pollution by installing additional capital equipment is: MC = 40p . Where P represents a reduction of one unit of pollution in the mines.
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Get PriceThe Surface Mine Control and Reclamation Act of 1977 (SMCRA) states that coal mining companies must restore most surface mined land by replanting it with vegetation. The law was amended in 1990 to fund the reclamation of abandoned mines as well. This funding comes from a tax of 35 cents per ton of surface mined coal.
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Get PriceCost Savings up to 18% (relative to current practice) have been realised with the expanded presplit spacing as shown in the following table. Orica Mining Services wishes to acknowledge the staff at Placer (Granny Smith) for the support, input and permission to publish this Case Study.
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Get PriceUNESCO – EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING – Vol. II Surface Mining Methods and Equipment J. Yamatomi and S. Okubo ©Encyclopedia of Life Support Systems (EOLSS) Figure 2. Change in production and productivity of US coal mines The higher productivity for open pit mining equipment also lowers costs.
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Get PriceCoal mining is only a temporary use of land, so it is vital that rehabilitation of land takes place once mining operations have stopped. In best practice a detailed rehabilitation or reclamation plan is designed and approved for each coal mine, covering the period from the start of operations until well after mining has finished.
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Get PriceIn this month's Spotlight Feature Article, from the pages of the January issue of International Mining magazine, John Chadwick takes an annual look at the advance of autonomous and remote control mining equipment and new products in the field.
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Get PriceCoal mine reclamation is the rehabilitation of land after coal mining operations have stopped. It is a requirement of the Surface Mining Control and Reclamation Act (SMCRA) of 1977. As mining operations cease bulldozers and scrapers are used to reshape the disturbed area.
Get PriceThe Surface Mining Control and Reclamation Act of 1977 (SMCRA or the Act) provides that, as a prerequisite for obtaining a coal mining permit, a person must post a reclamation bond to ensure that the regulatory authority will have sufficient funds to reclaim the site if the permittee fails to complete the reclamation plan approved in the permit.
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