A well completed for the production of crude oil from at least one oil zone or reservoir.
Велика или дубока рупа која је била узрокована бушењем.
Отвор који је направљен преко стубова који омогућавају вентилацију.
An electric current that reverses its direction at regularly recurring intervals.
A soft coal that is considered better than lignite but worst than anthracite. It's about 60-80% carbon with the rest being water, air, hydrogen, and sulfur.
Refers to the elevator that is used in a mine to transport materials and people.
The amount of heat in BTU's that is release by burning one pound of coal.
The angle, measured to the horizon, after which sediments or material will slide or fall.
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An entity that when applied to a mass causes it to accelerate. Sir Isaac Newton's Second Law of Motion states: the magnitude of a ...
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Smederevska Palanka, Serbia
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