An adaptation of the auger surface miner, the thin-seam miner cuts an
entry 8 ft (2.4 m) wide and up to 5 ft (1.5 m) high into coal located
under the highwall in surface mines. SME, 1
a. A fragment of rock or mineral mechanically ground to a thickness of
approx. 0.03 mm, and mounted between glasses as a microscope slide. Rocks
and most minerals except the oxides and sulfides of the metals are
translucent to transparent in thin section, and the optical properties of
each mineral can be studied with the microscope.
See also:polished section
b. A rock or mineral slice cut for study by transmitted light with a
polarized-light microscope. It may also be polished for study with a
reflected-light microscope.
c. A coal seam less than its normal thickness. Nelson
Slabs of stone employed for wainscoting, flooring, etc. Fay
A coring bit the kerf or wall thickness of which is about one-half or less
that of the wall thickness of the same outside-diameter-size standard
coring bit. Long
See:Shelby tube; thin-wall sampler.
A soil-sampling barrel made from steel tubing having approx. a 16-gage
wall thickness. Syn:thin-wall drive sampler; thin-wall tube sampler.
CF:Shelby tube
A bacterial strain that catalyzes the oxidation of ferrous iron (Fe (super
+2) ) to ferric iron (Fe+3 ). SME, 1
A bacterial strain that catalyzes the oxidation of sulfur to sulfate (SO
4-2 ). SME, 1
A derivative from thio-urea. In the flotation process, it is used as a
collector agent of low solubility in water; it is sometimes used in copper
or galena flotation. Pryor, 3
Powerful collector agents in the flotation process where xanthates fail.
Pryor, 3
See:thiophene
Kerite containing 9% sulfur. Tomkeieff
A liquid; C4 H4 S ; analogous to furan and pyrrole in its
heterocyclic structure and resembles benzene both physically and
chemically except for its greater reactivity. Found in small amounts (as
up to 0.5% by weight) in benzene from coal tar unless it has been removed
by treatment with sulfuric acid. Used chiefly in organic synthesis.
Syn:thiofuran
Equivalent to chalcophile. Literally, sulfur-loving.
See also:chalcophile
Sulfydric flotation agents, produced by reacting phosphorus pentasulfide
with phenols, alcohols, etc., and marketed as Aerofloats. Pryor, 3
A lever to which force is applied between the fulcrum and the work point.
Nichols, 1
The Third Theory states that the specific work input required for size
reduction is inversely proportional to the square root of the product
size, less the work required to form the feed. Pit and Quarry
a. A cross hole or ventilation passage between two headings.
See also:thurl; thurling; thirling. Standard, 2
b. To cut out the lost coal between two workings or headings. CTD
c. To cut through from one working into another. CTD
a. The driving of a proposed roadway from two points some distance apart
to meet each other; the connecting of underground roadways or shafts.
Nelson
b. See:thirl; crosscut; through cut.
c. See:holing; stenton.
A notice claiming a location upon this vein has only one meaning. It
raises an inference that the notice was posted upon or in close proximity
to a vein or lode, although, as a fact, no vein or lode then was exposed.
Ricketts