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30 CFR Part 46.5.b.1
Mining is the search for, extraction, and processing of valuable materials from the earth's crust. Surface and underground mining are currently the most commonly employed methods for accessing ore, minerals, or other metal and nonmetal commodities. This course covers common mining methods, as well as the lifecycle of a mine, from the development through reclamation.
Harder consolidated materials, such as granite, marble, and limestone, may require drilling and blasting for efficient removal.
Since mines represent enormous capital investments impacting large areas of land, great attention to detail is placed on locating valuable deposits and applying appropriate mining methods.
Jaw and cone crushers are common types of equipment used to physically break hard, consolidated material for downstream screening, sorting, stockpiling, or further processing.
What is mining?
Mining is the search for, extraction, and processing of valuable materials from the earth's crust.
What do open-pit and opencast mean?
The terms "open-pit" and "opencast" refer to the type of surface mining which results in depressions or deep, funnel-shaped pit surrounded by sloped or stepped walls.
What is the typical "life-cycle" of a mine?
At its most basic level, the lifecycle of a mine proceeds through development, operation, and then reclamation.
What is meant by mine development and what does mine development include?
An active mining operation is the result of a deliberate and painstaking process which involves geologic exploration and surveying, functional and operational design, land use evaluation and permitting, site clearing and preparation, and construction.
What do surface mining operations generally include?
Surface mining operations generally include drilling and blasting, extraction, hauling, processing, and stockpiling.
What is mine reclamation?
The process of mine reclamation closes the loop on land use after mining operations have ceased. Mine operators may be required to have a documented plan clearly outlining how the land will be managed and restored when the mine has closed. This may involve plans for replacing fill material, compacting the site, and planting trees.
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