Top — A mine roof; same as "back. Portal bus — Track-mounted, self-propelled personnel carrier that holds 8 to 12 people. Stope — Any excavation made in a mine to remove ore that has been made accessable by shafts and drifts. Active workings — Any place in a mine where miners are normally required to work or travel and which are ventilated and inspected regularly.
A fuse can be safely used to ignite a cap, which is the primer for an explosive. Cribbing — The construction of cribs or timbers laid at right angles to each other, sometimes filled with earth, as a roof support or as a support for machinery.
The greenhouse effect keeps the atmosphere warm and makes life on earth possible. Underground station — An enlargement of an entry, drift, or level at a shaft at which cages stop to receive and discharge cars, personnel, and material.
M Main entry — A main haulage road. Also, a highly sensitive, encapsulated explosive that is used to detonate larger but less sensitive explosives. Copper is used in coin industry and for making pipes and wire.
Lithology — The character of a rock described in terms of its structure, color, mineral composition, grain size, and arrangement of its component parts; all those visible features that in the aggregate impart individuality of the rock.
Horseback — A mass of material with a slippery surface in the roof; shaped like a horse's back.
It is almost pure carbon and is used mainly for home heating and cooking. Energy sources include coal, oil, gas, water hydrouranium nuclearwind, sunlight, geothermal, and others. Coal Gasification — The conversion of coal into a gaseous fuel.
Such special groups are called Nonmetallic minerals. Coal washing — The process of separating undesirable materials from coal based on differences in densities.
Room and pillar mining — A method of underground mining in which approximately half of the coal is left in place to support the roof of the active mining area.
Hoist — A drum on which hoisting rope is wound in the engine house, as the cage or skip is raised in the hoisting shaft. Winning — The excavation, loading, and removal of coal or ore from the ground; winning follows development.
Surface mine — A mine in which the coal lies near the surface and can be extracted by removing the covering layers of rock and soil. Bridge carrier — A rubber-tire-mounted mobile conveyor, about 10 meters long, used as an intermediate unit to create a system of articulated conveyors between a mining machine and a room or entry conveyor.
Such metals are called metallic minerals. Contour — An imaginary line that connects all points on a surface having the same elevation. Borehole — Any deep or long drill-hole, usually associated with a diamond drill. In coal mining this is the intended basis for roof bolting.
Slip — A fault. Acid deposition or acid rain — Refers loosely to a mixture of wet and dry "deposition" deposited material from the atmosphere containing higher than "normal" amount of nitric and sulfuric acids.
Blasting circuit — Electric circuits used to fire electric detonators or to ignite an igniter cord by means of an electric starter. Usually has a high Btu value and may be referred to as "soft coal. Tectonic forces — Forces pertaining to, causing, or resulting from structural deformation of the earth's crust.
Its purpose is to automatically compensate for any slack in the belting created by start-up, etc. Crushed coal and limestone are suspended in the bottom of a boiler by an upward stream of hot air.
Below please find a selection of API Technologies' Resources and Documentation. Resources (Document Sample) Title: “Conflict Minerals Policy”Type: LetterLength: 1 PageSummary: Details pertaining to requirements of the Dodd-Frank Wall Street Reform and Consumer Protection Act, Section Conflict Minerals (CMs).
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