One of the high explosives used for mining and quarrying. They can be
divided into four main classes: gelatins; semigelatins; nitroglycerin
powders, and non-nitroglycerin explosives, including water gels,
emulsions, and ANFO.
a. The study of geologic structures and particularly the modes of
formation and occurrence of mineral deposits and their discovery.
Syn:ore geology
b. In coal mining, the study of: rock formations, particularly with
reference to the Carboniferous System; the mode of formation of coal
seams, their discovery and correlation. See also:geology
Nelson
c. The study of the geologic aspects of mineral deposits, with particular
regard to problems associated with mining. CF:mining;
mining engineering. AGI
é= ‰Q ‡ŽQ M«ù {DICTIONARY TERMS:mining ground No land can be a mining claim unless
[\B]mining ground[\N]
Any of the dangers peculiar to the winning and working of coal and
minerals. These include collapse of ground, explosion of released gas,
inundation by water, spontaneous combustion, inhalation of dust and
poisonous gases, etc. Nelson
The mechanism on a continuous mining machine that breaks down the coal.
A legal contract for the right to work a mine and extract the mineral or
other valuable deposits from it under prescribed conditions of time,
price, rental, or royalties. Syn:mineral lease
A small locomotive for use in underground haulage, sometimes consisting of
a car bearing a powerful electric motor, built very low and operated
through a trolley. May also be operated by electricity from batteries.
Standard, 2
A coal-cutting machine. Standard, 2
See:machine miner
mining-machine-operator helper
See:machine helper
A truck used for transporting shortwall mining machines. Track-mounted
trucks are necessarily limited in use to sections employing track.
Crawler-type trucks are capable of transporting the cutting machine
without need of track and without benefit of ropes. Jones, 1
Any of the systems employed in the exploitation of coal seams and
orebodies. The method adopted depends on a large number of factors,
mainly, the quality, shape, size, and depth of the deposit; accessibility
and capital available. See also:coal mining methods; metal mining;
stoping methods. Nelson
See:top slicing and cover caving
Property, esp. land, valued for its mining possibilities. Craigie
The term "mining purposes" as used in connection with mill-site locations,
is very comprehensive, and may include any reasonable use for mining
purposes that the quartz lode mining claim may require for its proper
working and development. This may be very little, or it may be a great
deal. The locator of a quartz lode mining claim is required to do only
$100 worth of work each year until obtaining a patent. Ricketts
In a mining camp, a person selected to keep a record of all mining claims
and properties. Mathews
A process of mining by which the ore, or coal, is untouched until after
all the gangways, etc., are driven, when the work of extraction begins at
the boundary and progresses toward the shaft. CF:mining advancing
Fay
Upon a specific piece of ground, a right to enter upon and occupy the
ground for the purpose of working it, either by underground excavations or
open workings, to obtain from it the mineral ores which may be deposited
therein. Ricketts
A cover or canopy developed by the U.S. Bureau of Mines for the protection
of mine workers and machines at the face of a mechanized coal heading.
Hydraulic rams telescope and steer the shield forward as the face
advances. It enables continuous miners to operate with greater safety.
Nelson
An artificial channel or passage for water used in mining.
CF:mining ditch
Work, as it is commenced on the ground, is such that, if continued, will
lead to a discovery and development of the veins or orebodies that are
supposed to be in the claim, or, if these are known, that the work will
facilitate the extraction of the ores and minerals.
A theodolite having particular features of design that make it suitable as
an underground surveying instrument; e.g., incorporating an arrangement
for the centering movement to be above the foot screws. BS, 7