write about the different types of excavation of minerals?
Answers
Answer:
Mining techniques can be divided into two common excavation types: surface mining and sub-surface (underground) mining. ... Both types of ore deposit, placer or lode, are mined by both surface and underground methods.
Answer:
Mining
Mining is the extraction of valuable minerals or other geological materials from the earth from an orebody, lode, vein, seam, or reef, which forms the mineralized package of economic interest to the miner.
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Surface Mining
Surface mining is done by removing (stripping) surface vegetation, dirt, and, if necessary, layers of bedrock in order to reach buried ore deposits. Techniques of surface mining include: open-pit mining, which is the recovery of materials from an open pit in the ground, quarrying or gathering building materials from an open-pit mine; strip mining.
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Open-Pit Mining
Open-pit mining, or open-cast mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow.
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