stoper
A kind of drill for excavating stopes.
Mining and extraction
591 entries in this trade.
stoping
The removal of the desired ore from an underground mine, leaving behind an open space known as a stope.
stopping
A partition or door to direct or prevent a current of air.
stowing
A method of working in which the waste is packed into the space formed by excavating the vein.
straddle
A vertical mine-timber supporting a set.
streamer
One who searches for stream tin.
streamwork
A place where an alluvial deposit of tin ore is worked.
streamworks
A place where an alluvial deposit of tin ore is worked.
studdle
A prop supporting a platform in a mine.
stull
A framework of timber covered with boards to support rubbish or to protect miners from falling stones.
stulm
A shaft, conduit, adit, or gallery to drain a mine.
sturt
A bargain in tribute mining by which the tributor profits.
subequigranular
adjectiveMining and extraction
Almost or imperfectly equigranular.
subvolcanic
adjectiveMining and extraction
Intrusive, but having grain size and texture intermediate between volcanic and plutonic rocks.
sumpman
A pitman's assistant, responsible for the machinery in the engine shaft.
surfaceman
A miner who works in the open air, rather than underground.
swad
A thin layer of refuse at the bottom of a seam.
swallet
Water breaking in upon the miners at their work.
swelly
An abnormal local thickening of a seam of coal.
switch keeper
A worker who attends the switches or passing places on the underground railways.
sylvester
A ratchet device for pulling out pit props.
symplectic
adjectiveMining and extraction
Of or pertaining to a symplectite; symplectitic.
symplectite
An intimate intergrowth of two or more different crystals, formed from the breakdown of unstable phases, consisting of minerals, ceramics, or metals.
symplectitic
adjectiveMining and extraction
Of or pertaining to a symplectite.
synthesis gas
The gas obtained by heating coal and steam; coal gas.
tailgate
A tunnel for drawing spent air away from the working face of a mine.
tailings
The waste that remains after the minerals have been extracted from an ore by ore dressing; the waste from coal mining.
taker-off
A person employed to unhook the wagons at self-acting inclines.
teschenite
Any of a group of rocks containing essential pyroxene, olivine, and analcime.
theralite
calcic foidal gabbro, a kind of plutonic hylocrystalline rock
thill
The shallow stratum of underclay that lies under a seam of coal; the bottom of a coal-seam.
thirl
To drill or bore; to cut through, as a partition between one working and another.
thirling
In lead-mining, a mark indicating the termination of a set or pitch
thrum
A shove out of place; a small displacement or fault along a seam.
thurst
The ruins of the fallen roof in a coal mine, resulting from the removal of the pillars and stalls.
ticketing
A periodic sale of ore in the mining districts, in which buyers wrote their bids upon tickets.
tights
In blasting rock, a piece of unbroken rock within the pay limit of a blast.
timber drawer
A person employed to remove timber props.
timberman
A person who installs timbers in a mine.
tonstein
Any indurated argillaceous rock that stands out within coal measures as a distinctive marker horizon.
tossing
The process of washing ores by violent agitation in water, in order to separate the lighter or earthy particles; tozing.
trackhoe
An excavator (machine) mounted on caterpillar tracks. (Most are large; some are miniature for small jobs.)
trade
Refuse or rubbish from a mine.
train
To trace (a lode or any mineral appearance) to its head.
tramble
To wash (tin ore, etc.) with a shovel in a frame fitted for the purpose.
trap
To attend to and open and close a (trap-)door.
trapdoor
A door in a level for regulating the ventilating current; a weather door.
trapper
A worker (usually a child) who opens and shuts a door in a gallery or level of a mine, to manage ventilation and access.
tribute
A certain proportion of the mined ore, or of its value, given to the miner as payment.
tributer
A miner who is paid in a certain portion of the ore, or its value.
tributor
A miner who was paid a percentage of the value of whatever ore he mined.
Triger process
A method of sinking through water-bearing ground, in which the shaft is lined with tubbing and provided with an airlock, work being proceeded with under air pressure.
trimmer
A device for storing coal in gradually increasing piles made by building up at the point of the cone or top of the prism.
trogue
A wooden trough forming a drain.
trommel
A revolving buddle or sieve for separating, or sizing, ores.
trouble
A fault or interruption in a stratum.
trumpeting
A channel cut behind the brick lining of a shaft.
trunk
A flume or sluice in which ores are separated from the slimes in which they are contained.
tub
A box or bucket in which coal or ore is sent up a shaft.
tuffite
A rock predominantly but not solely composed of pyroclastic fragments.