petanque
Any of various ores, including forms of silver sulfide (such as stephanite) and the copper ore tetrahedrite.
Mining and extraction
591 entries in this trade.
petrochemical
Any chemical derived from petroleum.
petrography
The branch of petrology that deals with the scientific description and classification of rocks.
petroliferous
adjectiveMining and extraction
Containing or yielding petroleum.
phanerite
An igneous rock composed of macroscopic mineral crystals (coarse grains large enough to be visible to the naked eye).
phaneritic
adjectiveMining and extraction
Pertaining to phanerites, igneous rocks composed of macroscopic mineral crystals (coarse grains large enough to be visible to the naked eye).
pilot
The heading or excavation of relatively small dimensions, first made in the driving of a larger tunnel.
pinch out
A volume of rock or oil trapped or isolated between strata that have pinched it out.
pineapple opal
A large raw opal spheroidal gemstone with pineapple-like projection points
pit boss
A direct overseer of laborers in a mining operation.
pitch
The limit of ground set to a miner who receives a share of the ore taken out.
pitch mining
The mining of steeply inclined seams of coal.
pitfall
Subsidence below ground in a mine, which can cause the ground level above to drop.
pitwork
Pumping machinery used in a mine.
pitwright
A carpenter or engineer employed at a mine.
plumming
The operation of finding, by means of a mine dial (compass), the place where to sink an air shaft, or to bring an adit to the work, or to find which way the lode inclines.
pony putter
The driver of a pony that draws a mine wagon.
pothole
A shallow hole dug for the purpose of prospecting for opal or gold.
powerful
adjectiveMining and extraction
Large; capacious; said of veins of ore.
presplit
To shape the outcome of an explosive blast by forming cracks in advance.
PRMS
Initialism of Petroleum Resources Management System.
prospect
To determine which minerals or metals are present in a location.
protomylonite
A mylonite where most of the rock volume has not been ground into matrix and so contains its original texture.
pulsator
A jigging machine used in the South African diamond industry.
putter
One who pushes the small wagons in a coal mine, to transport the coal mined by the getter.
pyrometamorphic
adjectiveMining and extraction
Rapidly changed by heat, such as a natural fire, or lava flow.
quarry
A site for mining stone, such as limestone, or slate.
quarry car
A car that operates on rails laid in a quarry, usually for carrying rock or waste.
quick
adjectiveMining and extraction
productive; not "dead" or barren
ramble
A bed of shale over the seam of coal.
random
The direction of a rake-vein.
rapper
A swinging knocker for making signals at the mouth of a shaft.
recovery
The extraction of an ore from a mine, or of a metal from an ore
reformate
The product of a hydrocarbon reforming process; an intermediate in the production of fuels such as gasoline.
reformer
A device used to convert petroleum refinery naphthas, typically having low octane ratings, into high-octane liquid products called reformates.
rejig
To separate or sort (ore) again in a jigger or sieve.
remblai
Earth or materials made into an embankment after excavation.
return
A roadway along which foul air travels from the face on its way out of the mine.
ribbed
adjectiveMining and extraction
intercalated with slate; said of a seam of coal.
rid
Loose earth, rubble, etc., on the surface of a quarry which must be removed before digging can begin; rid-work.
riffle
A trough or sluice having cleats, grooves, or steps across the bottom for holding quicksilver and catching particles of gold when auriferous earth is washed. Also one of the cleats, grooves or steps in such trough.
rock glass
Metastable glass of volcanic or dyke origin.
rockpicker
A person, machine, or machine component that cleans out the rocks during ore dressing.
rockpicking
Cleaning out the rocks during ore dressing. Done by a person, machine, or machine component.
rolley
A horse-drawn wheeled vehicle used in a mine.
rolly
Alternative form of rolley (“horse-drawn wheeled vehicle used in a mine”).
roof
The surface or bed of rock immediately overlying a bed of coal or a flat vein.
roofbolt
A safety bolt installed in the roof of an underground mine.
roofbolter
A machine for installing roofbolts.
roofstone
The stone or rock layer immediately above a coal seam.
room
An area for working in a coal mine.
room and pillar
A variant of breast stoping in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars.
run
The horizontal distance to which a drift may be carried, either by licence of the proprietor of a mine or by the nature of the formation; also, the direction which a vein of ore or other substance takes.
runround
A track arrangement (usually a loop) that allows mine cars to be redirected without reversing.
salt
To blast metal into (as a portion of a mine) in order to cause to appear to be a productive seam.
schlich
The finer portion of crushed ore, as of gold, lead, or tin, separated by the water in certain wet processes.
scoop driver
One who operates an automated mining scoop.
scram
To mine for ore on a small scale, especially from mines previously been worked on where most of the ore is believed to have been removed.
screener
A person employed to filter the mined coal through a metal screen to remove impurities.
screenman
A person employed to screen the coal to remove impurities.