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chapter 14

Horizontales
traditional mining produces huge open-cast mines
idealized cycle of processes undergone by rocks in the earth's crust
specific geological evidence and knowledge
diminish or destroy the value or quality of.
extraction of minerals and ores from underground
extract (metal) from its ore by a process involving heating and melting
long high sea wave
method of surface mining
a broad category of mining in which soil and rock overlying the mineral deposit
solid outer section of Earth
sometimes fracture and whose interaction causes continental drift
central or most important part of something
sudden and violent shaking of the ground
Verticales
surface mining technique of extracting rock or minerals
rock or soil overlying a mineral deposit
earth's physical structure
naturally occurring solid material
relatively new type of coal mining
solid mineral
often deposited in layers
portion of the earth
changed by extreme heat and pressure.
accrual accounting method of earth minerals
obtain (ore or coal) by open-pit mining.
one of the three main rock types
naturally occurring substance
commodity not needed for immediate use
form into a hard outer laye