| Electrical fuse - A metallic
cup holding fulminate of mercury into which two wires are held by a plug. |
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| Electrical grounding - To
connect with the ground to make the earth part of the circuit. |
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| Electrowinning: the recovery of metal by electrolysis. An electric current is
passed through a solution containing dissolved metals, which causes the metals to be
deposited on a cathode. |
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| EM survey - A geophysical
survey employing the use of electromagnetic radiations whose effects are measurable by a
detecting device. |
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| Entry - An underground
horizontal or near-horizontal passage used for haulage, ventilation, or as a mainway; a
coal heading; a working place where the coal is extracted from the seam in the initial
mining; same as "gate" and "roadway," both British terms. |
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| Evaluation - The work
involved in gaining a knowledge of the size, shape, position and value of coal. |
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| Exploration - The
search for mineral deposits and the work done to prove or establish the extent of a
mineral deposit. Alt: Prospecting and subsequent evaluation. |
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| Explosive - Any rapidly
combustive or expanding substance. The energy released during this rapid combustion or
expansion can be used to break rock. |
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| Extraction - The
process of mining and removal of waste or ore from a mine. |
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