A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

G

Gabbro       A coarse-grained, dark, igneous rock.

Gadd       A small rock wedge or chisel also known as a moil.

Galena       A sulphide mineral of lead, being a common lead ore mineral.

Gallery       A horizontal or a nearly horizontal underground passage, either natural or artificial.

Gamma       A unit of measurement of magnetic intensity.

Gangue       The worthless minerals in an ore deposit.

Gasification       Any of various processes by which coal is turned into low, medium, or high Btu gases.

Gathering conveyor; gathering belt       Any conveyor which is used to gather coal from other conveyors and deliver it either into mine cars or onto another conveyor. The term is frequently used with belt conveyors placed in entries where a number of room conveyors deliver coal onto the belt.

Geiger counter       An instrument used to measure radioactivity (e.g., that which emanates from certain minerals) by means of a Geiger- Mueller tube. It detects the gamma rays and indicates the frequency or intensity either visually (by dial or flashing light), audibly (by earphones) or both.

Geochemistry       - The use of a broad spectrum of chemical elements and ratios and their patterns, which are naturally dispersed around ore deposits, to detect concealed orebodies.

Geochemistry       The study of the chemical properties of rocks.

Geologist       One who studies the constitution, structure, and history of the earth's crust, conducting research into the formation and dissolution of rock layers, analyzing fossil and mineral content of layers, and endeavoring to fix historical sequence of development by relating characteristics to known geological influences (historical geology).

Geology       The science concerned with the study of the rocks which compose the Earth.

Geophysical survey       A scientific method of prospecting that measures the physical properties of rock formations. Common properties investigated include magnetism, specific gravity, electrical conductivity and radioactivity.

Geophysicist       A scientist who practices geophysics

Geophysics       - The use of the physical, magnetic or electrical properties of rock formations, minerals and orebodies to remotely detect new ore deposits, either by ground or airborne surveys.

Geophysics       The study of the physical properties of rocks and minerals.

Geothermal       Pertains to the heat of the Earth's interior.

Gin Pole       Long portable stick with a pulley on top for use as a crane usually to lift shed poles into position.

Glacial drift       Sedimentary material, consisting of clay and boulders, that has been transported by glaciers.