A Welsh term for a hoisting bucket; a bowk; a kibble. Fay
a. A horizontal or inclined stone drivage for development or to connect
mine workings, seams, or shafts. It may be open to the surface at one end
and used for drainage, ventilation, or haulage or as a personnel egress
(walking or riding) from the mine workings. See also:tunneling
Nelson
b. See:crut
c. A leaden tube used in making sulfuric acid to connect adjoining
chambers in a series. Standard, 2
d. A long, narrow subterranean passageway.
e. A horizontal or nearly horizontal underground passage that is open at
both ends. The term is loosely applied in many cases to an adit. An adit,
if continued through a hill, would be a tunnel. Any level or drift in a
mine open at one end, or which may serve for an adit. Often used as a syn.
for adit; drift; gallery. See also:adit
f. To penetrate with or as if with a tunnel; to make a passage through or
under; to make or use a tunnel; to undermine. Webster 3rd
a. A blast effected by the detonation of great quantities of explosive,
loaded in small tunnels driven into the face at the level of the quarry
floor or at the level of the terrain at the foot of the slope of the
deposit. This blasting method is called tunneling. Streefkerk
b. See:heading blast
A method of heavy blasting in which a heading is driven into the rock and
afterwards filled with explosives in large quantities. This is similar to
a borehole on a large scale, except that the heading is usually divided
into two parts on the same level at right angles to the first heading.
This forms a T, the ends of which are filled with explosives and the
intermediate parts of which are filled with inert material like an
ordinary borehole. Similar to gopher hole blasting.
See also:gopher hole blasting
Any boring machine for making a tunnel; often a ram armed with cutting
faces operated by compressed air. Standard, 2
A rapid tunneling procedure, consisting of a combined drill carriage and
manifold for water and air so that immediately when the carriage is at the
face, drilling may commence with no lost time for connecting up, waiting
for drill steels, etc. The air is supplied at pressures of 95 to 100 psi
(655 to 690 kPa). Nelson
When a lode or vein is discovered in a tunnel, the tunnel owner is called
upon to locate the area containing the vein or lode on the surface and
thus create a mining claim. Ricketts
A heavy bar used for mounting machine drills in large drifts or tunnels,
and usually holding two machines. Fay
Excavation carried out completely underground and limited in width and
height. Carson, 1
The working face in an excavation or tunnel or other working place from
which driving is carried out. Fraenkel
The operation of excavating, driving, and lining tunnels. Nelson
A long tunnel-shaped furnace through which the charge is generally moved
on cars, passing progressively through zones in which the temperature is
maintained for preheating, firing, and cooling. ARI
One who controls the operation of a tunnel kiln in which bricks are fired,
and a preheating chamber in which bricks are heated prior to firing and
after drying. DOT
a. The timber, brick, concrete, or steel supports erected in a tunnel to
maintain dimensions and safe working conditions.
See also:steel tunnel support; lining. Nelson
b. See:ring; tunnel support.
In anthracite coal mining, one who drives a tunnel in rock from one coal
seam to another or through a fault (the movement of the earth having
separated a once continuous seam into two sections). DOT
A miner experienced in the use and handling of rock drills and shovel
loaders, and in tunnel-blasting methods. Such a miner is wholly employed
on tunneling and is usually paid a fixed rate per shift with perhaps a
bonus payment for high rates of tunnel advance. Nelson
A right to enter upon and occupy a specific piece of ground for the
purpose of carrying out work in a tunnel and extracting waste rock or
earth necessary to complete the tunnel, and making such use after
completion as may be necessary to work the mining ground or lode owned by
the party running the tunnel. By implication, the grant of such a right
carries with it every incident and appurtenant thereto, including the
right to dump the waste rock at the mouth of the tunnel on the land owned
by the grantor at the time of the conveyance of the tunnel right, such
right or easement being necessary for the full and free enjoyment of the
tunnel right. Ricketts
Timbers of sufficient strength to support the roof of the tunnel. They are
sometimes set upon sills and usually capped with short crosspieces.
Fay
A shaft sunk, such as in a hill, to meet a horizontal tunnel. Also called
tunnel pit. Standard, 2
a. An area for a tunnel. The locator of a tunnel site is given the right
to all veins cut by the tunnel within 3,000 ft (915 m) of its portal, and
1,500 ft (457 m) on the strike of each blind vein cut; this length may be
all on one side of the tunnel or divided as desired. The veins must be
blind lodes not previously known to exist. Lewis
b. There is no distinction between a tunnel claim under which a tunnel is
run for the development of veins or lodes already located, and one where a
tunnel is projected for blind veins or lodes. Ricketts
See:steel tunnel support; tunnel lining.