Any of the smaller rolls in an anthracite breaker.
A small shaft raise extending from a lower to a higher level. Fay
A device for exerting a strong pull; may be used to withdraw steel arches
from disused roadways. It consists of a framework containing a
hand-operated drum, around which a steel rope 50 ft (15.24 m) in length is
wound. To hold the drum in position a ratchet device is used with both
gears. A simple reversing mechanism that disengages the ratchet is also
attached. The winch is firmly anchored when in use. See also:winch;
sylvester. Nelson
An adjustable wrench named for its inventor, Thomas Monkey.
Crispin
The treatment of copper sulfide ores by roasting with sodium sulfate, and
subsequent lixiviation and precipitation. Fay
Containing one hydrogen atom replaceable by a metal with the formation of
a salt. CTD
A form of aerial ropeway in which the same rope is used both to support
and haul along the overturning skips in which the debris is carried. These
rest upon the rope and obtain a sufficient frictional grip on it to be
carried up moderate gradients and over pulleys by means of an inverted
Vee-shaped saddle lined with wood, rubber, or composition. The rope is
driven by a surge wheel in a similar manner to an endless-rope haulage.
See also:aerial ropeway; fixed-clip monocable. Sinclair, 5
Having or consisting only of one color or frequency.
Electromagnetic radiation of a single wavelength or frequency.
Adj. of monocline.
A local steepening in an otherwise uniform gentle dip.
CF:anticlinal bend; homocline; flexure. Adj: monoclinal. Obsolete syn:
unicline. AGI
A quarryman's term for blocks with two parallel sets of sides at right
angles and one parallel set not at right angles.
All point groups characterized by lattices with two crystallographic axes
at right angles and one axis inclined. See also:crystal systems
a. See:monogenetic
b. Said of an igneous rock (such as dunite) composed essentially of a
single mineral. Syn:monomineralic
a. Resulting from one process of formation or derived from one source, or
originating or developing at one place and time; e.g., said of a volcano
built up by a single eruption. AGI
b. Consisting of one element or type of material, or having a homogeneous
composition; e.g., said of a gravel composed of a single type of rock.
CF:polygenetic
A free-flowing high explosive widely used for charging bulled holes and
large-diameter (well drill) holes. Nelson
a. A piece of unfractured bedrock, generally more than a few meters
across; e.g., an unweathered joint block moved by a glacier. AGI
b. A large upstanding mass of rock, such as a volcanic spine. AGI
c. One of many large blocks of stone or concrete forming the component
parts of an engineering structure, such as a dam. AGI
d. A vertical soil section, taken to illustrate the soil profile.
AGI
Furnace lining made in one piece or formed by casting, ramming, or tamping
into position. Osborne
Coal microlithotype consisting of a single maceral; i.e., fusite or
vitrite. AGI
See:monogene
Upper Pennsylvanian geologic time. AGI