A trough or channel used for conveying the tailings; a channel for
conducting water away from any plant or works. Nelson
a. The rope that passes around the return sheave in main-and-tail haulage
or a scraper loader layout. See also:main rope
b. The rope used to draw the empties back into a mine in a tail-rope
haulage system. Zern
c. A counterbalance rope attached beneath a cage when the cages are
hoisted in balance. Zern
d. A hemp rope used for moving pumps in shafts. Fay
In bituminous coal mining, one who works on a tail-rope haulage system,
removing the haulage-cable hook from the rear of a train of empty cars
that has been lowered down an inclined haulageway, and attaching the hook
to the front of a train of loaded cars to be hauled to the surface. Also
called tail-rope boy. DOT
In bituminous coal mining, one who operates a hoisting engine that draws
the cable of a tail-rope haulage system used to raise and lower mine cars
on tracks between the surface and a level in a mine. DOT
In bituminous coal mining, a person who fires the boiler supplying steam
for the engine that powers the tail-rope haulage system, a type of cable
haulage used to raise and lower cars along an incline between the surface
and a level in a mine. DOT
A single track system of rope haulage in which a double-drum haulage
engine at the unloading terminal winds the main rope on one drum. The
train or trip of cars is connected to the other end of the main rope and
also to a tail rope that extends to the inner terminal in the mine, around
a tail sheave, and then back over idler sheaves at one side of the
haulageway to the other drum at the haulage engine.
See also:rope haulage
See:tail-rope rider
In bituminous coal mining, one who works on trains of cars hauled by
tail-rope haulage system at mine, coupling and uncoupling cars, and
hooking and unhooking cable to and from trains. Also called tail-rope man.
DOT
A method of haulage in which one rope--the main rope--is attached to the
front end of a trip of cars and another rope--the tail rope--is attached
to the rear end of the trip. It is operated by a hoisting engine and two
separate drums. Hudson
Can. Portion of tailings containing some mineral that cannot be
economically removed. This is constantly assayed as it leaves the
treatment plant so that recovery can be known and controlled at all times.
CF:heads
The part of a mining belt conveyor that consists of the tail pulley, the
framing, belt idlers if included, and means for attaching a belt takeup.
NEMA, 2
The shaft in the tail or foot section of a belt or chain conveyor that
supports either the tail pulley or the tail sprocket. Jones, 1
a. An arrangement whereby a sheave is placed at the bottom of a shaft, and
a rope is fastened to the bottom of one cage and then passed down around
the sheave and up to the bottom of the cage in the other compartments;
thus practically complete balancing is effected. Lewis
b. The pulley around which the tail rope of a scraper loader or
main-and-tail haulage passes. See also:turn pulley
The clearance required by the rear of a revolving shovel.
Nichols, 1
The simplest form of track layout for car or trip loading. In this system,
the track can merely be extended down the heading, or it can be turned
right or left, and then turned back, U-fashion, in an adjacent heading.
The major disadvantage is that trips must come out the same way they go
in, meaning increased loss of time unless the changing track is very
close. Coal Age, 3
The water downstream from a structure, as below a dam. AGI
See:taeniolite
a. A mineral-bearing area that a mine is permitted to work. Also called
holding; parcel; taking. BS, 7
b. The area or extent of coal that a coal mine owner has the right, under
a lease, to mine and extract. See also:concession system; royalty.
Nelson
c. Eng. The extent or area of a lease of mineral property, often several
thousand acres. Fay
d. Lanc. To show or reveal gas. Fay
Cumb. An outcrop. As a verb, to crop out. Fay
a. To measure the ventilating current. Fay
b. Applied to a ventilating fan as working well, or working poorly.
Fay