haul truck
An off-road, heavy-duty dump truck specifically engineered for use in high-production mining and exceptionally demanding construction environments.
Mining and extraction
591 entries in this trade.
haulback
A method of surface mining where overburden (the material on top of the coal or ore) is transported from an area and then hauled back after removal of ore or coal.
haulier
A miner who hauls coal from the coalface to the bottom of the shaft.
headframe
the structure supporting machinery above the entrance to an underground mineshaft.
heading
A gallery, drift, or adit in a mine, particularly one driving through a solid body of coal or ore; also, the end of a drift or gallery; the vein above a drift.
headsman
A labourer in a colliery who transports the coal from the workings to the horseway, and who is oftentimes assisted by a younger worker called a foal.
heapstead
The elevated framework of wood or iron at bank, to the top of which the pit is continued above the surface, to provide the necessary height to pass the coals over the skreens into the wagons.
heave
To displace (a vein, stratum).
helper-up
A boy employed to assist the barrowman out of a dip place.
highwall
The unexcavated face of exposed overburden and coal in a surface mine.
hitch
A hole cut into the wall of a mine on which timbers are rested.
hod boy
A boy employed to convey coal to wagons in the working place.
hogger pump
The uppermost pump in the pit of a mine.
hoistman
A person who operates the hoisting machinery.
hoistroom
A space at the top of a mineshaft that holds the elevator to lift humans and equipment using a pulley and cable.
holing
undercutting in a bed of coal in order to bring down the upper mass.
horse
A mass of earthy matter, or rock of the same character as the wall rock, occurring in the course of a vein, as of coal or ore; hence, to take horse (said of a vein) is to divide into branches for a distance.
hudge
A bucket for hoisting coal or ore.
hurrier
A child employed in a coal mine to drag baskets or small wagons full of coal from the coal face where it was mined, up to the surface.
hurry
To put: to convey coal in the mine, e.g. from the working to the tramway.
hush
A part of a mine or quarry where ore is to be, or has been, excavated by an artificial flow of water.
hushing
The use of a heavy discharge of water to uncover a mineral vein or wash ore.
hutch
A jig or trough for ore dressing or washing ore.
inclineman
A miner working on an inclined plane.
indane
A bicyclic hydrocarbon consisting of a benzene ring fused to that of cyclopentane; it, and its derivatives, are found in petroleum
inset
An opening partway down a shaft, giving access to the intermediate levels.
intersertal
adjectiveMining and extraction
Having glass between larger crystals in a porphyritic rock.
iron ore
A mineral deposit from which iron can be viably extracted.
isohume
An isoline connecting places in which the coal seam has equal moisture content.
jackanapes
A small pulley which keeps a rope in line when lifting ore, water, etc., from a mine.
jadding
Holing or undercutting (something, such as a bed of coal, or stone).
jenkin
A narrow excavation driven through a pillar of coal.
jibhead
The head of a jib (arm of a crane).
jig
An apparatus or machine for jigging ore.
jigging
The act of using a jig; the act of separating ore with a jigger, or wire-bottomed sieve, which is moved up and down in water.
jinny road
An inclined road in a coal mine, on which loaded cars descend by gravity, drawing up empty ones.
jud
A mass of coal holed or undercut so as to be thrown down by wedges.
jump
A dislocation in a stratum; a fault.
keeve
A large vat used in dressing ores.
keratophyre
A compact porphyritic rock composed of alkali-feldspars and diopside, and possibly including quartz.
kettle bottom
A smooth cylindrical piece of petrified wood in the ceiling of a mine which may drop down and injure or kill miners
knobbing
The process of rough dressing stone; the act of cutting off projecting points from quarried stone.
knockstone
A block upon which ore is broken up.
Koepe
A system of winding, using the friction between the winding ropes and the drive pulley.
lacing
Lagging, or cross-pieces placed to prevent ore from falling into a passage.
lampkeeper
The person in charge of the Davy lamps in a mine.
lander
A person who waits at the mouth of the shaft to receive the kibble of ore.
landsale
The direct sale of coal from the colliery to the customer, transported by road.
lapillistone
A pyroclastic rock mostly composed of lapilli.
lath
One of the sharp-edged, thick planks driven forward to hold back loose earth or mud when digging the way through for tunnelling or spiling. Also called a spill.
launder
A trough used by miners to receive powdered ore from the box where it is beaten, or for carrying water to the stamps, or other apparatus for comminuting (sorting) the ore.
light oil
The oily product, lighter than water, forming the chief fraction of the first distillate of coal tar, and consisting largely of benzene and toluene.
liquefied natural gas
Natural gas that has been cooled and compressed to liquid form for transport and storage.
lithogeochemistry
The scientific study of the composition, structure, properties and reactions of stone and mineral from the earth.
LNG
Initialism of liquefied natural gas.
lode
A vein of metallic ore that lies within definite boundaries, or within a fissure.
lodestuff
The material found in a lode, including gangue and ore.
lodge
The space at the mouth of a level next to the shaft, widened to permit wagons to pass, or ore to be deposited for hoisting; called also platt.
lofting
Lagging or longitudinal timber resting on caps to support the roof of a working.
log
A weight or block near the free end of a hoisting rope to prevent it from being drawn through the sheave.