A heavy 120-hp (89.5-kW) cutter loader. The first Meco-Moore was used in a
Lancashire, England, colliery in 1934. See also:A
Nelson
See:moss agate
An expression of the average particle size of a sediment or rock, obtained
graphically by locating the diameter associated with the midpoint of the
particle-size distribution; the middlemost diameter that is larger than
50% of the diameters in the distribution and smaller than the other 50%.
AGI
An air chamber comprising steel cylinder 18 ft (5.5 m) long and about 6 ft
(1.8 m) in diameter, which has airtight doors at one end and is closed at
the other. It is used for immediate treatment of sufferers from caisson
disease. Hammond
Green glass emerald simulant.
A term proposed by Clarke (1908) to replace intermediate. CF:subsilicic;
persilicic. See also:intermediate
A major group of igneous rocks, characterized by high potassium content.
This suite was so named because of the predominance of potassium-rich
lavas around the Mediterranean Sea; specif. those of Vesuvius and
Stromboli. CF:Atlantic suite; Pacific suite. AGI
Any suspension of medium solids in water. BS, 5
A field term that, in accordance with an arbitrary scale established for
use in describing banded coal, denotes a vitrain band ranging in thickness
from approx. 1/12 to 1/5 in (2 to 5 mm). AGI
A screen for draining the separating medium from dense-medium bath
products. BS, 5
a. Said of an igneous rock, and of its texture, in which the individual
crystals have an average diameter in the range of 0.04 to 0.2 in (1 to 5
mm). AGI
b. Said of a sediment or sedimentary rock, and of its texture, in which
the individual particles have an average diameter in the range of 1/16 to
2 mm (62 to 2,000 mu m, or sand size). CF:coarse-grained; fine-grained.
AGI
Said of deposits and coal seams with a dip of 25 degrees to 40 degrees .
Stoces
When applied to valves and fittings, means suitable for a working pressure
of 125 to 175 psi (860 to 1,200 kPa). Strock, 1
A composite screen for draining and spraying the product from a
dense-medium bath to remove adherent medium solids. BS, 5
A diamond bit the cross-sectional outline of which is partially rounded
but not as fully rounded as a double-round nose bit.
Syn:half-round nose; modified-round nose. Long
The solid component of a dense-medium suspension. BS, 5
Any purification or grinding of the raw dense-medium solids to make them
suitable for use. BS, 5
The equipment used to remove adherent medium solids from a product from a
dense-medium bath (after drainage of surplus medium), usually by spraying,
and to remove contaminating coal and clay from these medium solids.
BS, 5
A bit with diamonds ranging from 8 to 40 per carat in size. Long
In general, a coal seam over 2 ft (0.6 m) and up to 4 ft (1.2 m) in
thickness. Nelson