A slanting screen in which the material to be screened passes down. The
screen is kept in vibration by the impact of a large number of small
hammers. Liddell
Variety of resin. Tomkeieff
The mean sea level now used as the British Ordnance Datum for leveling. It
was determined as the result of several years' observations at Newlyn,
Cornwall, England, and differs at various places by more than 0.3 m from
levels based on the Liverpool datum, which it supersedes. Hammond
A modified Scotch hearth in which poking or rabbling is done mechanically.
CTD
In mining, mandatory training given the miners having no previous mining
experience; includes instruction in the statutory rights of miners and
their representatives, use of self-rescue devices and respiratory devices
where appropriate, hazard recognition, emergency procedures, electrical
hazards, first aid, walk around training, and other health and safety
aspects of the tasks to which the person will be assigned.
CF:refresher training; task training. Federal Mine Safety
Newly mixed, but not unused, molders' sand. Standard, 2
The material generated in the manufacturing process of articles for
ultimate consumption; it includes defective castings, clippings, turnings,
borings, drosses, slags, etc., that are returned directly to the
manufacturing process or sold directly for reprocessing.
Term marking the distinction, made in mineral processing that involves
agitation, between a truly viscous (Newtonian) liquid and one in which
shear or apparent viscosity (pseudoviscosity) varies with the dimensions
of the containing system and the speed of agitation. The latter type of
fluid is said to be non-Newtonian. Pryor, 3
A leveling rod marked with narrow lines, ruler fashion. Nichols, 1
A diagonal brace in a square set. Fay
A chondritic stony meteorite composed of bronzite and olivine in a
friable, breccialike mass of chondrules. AGI
A former name for nickeline. Also spelled nicolite.
Syn:arsenical nickel; copper nickel.
A technique used in the determination of elastic constants of rock in
situ. Longitudinal and shear waves are generated in rock by small
explosive charges in shallow drill holes. Accelerometers and strain gages
are employed to measure arrival times for both waves. From wave velocities
and measured density, Poisson's ratio, modulus of elasticity, modulus of
rigidity, Lame's constant, and bulk modulus can be calculated.
Lewis
a. An isometric mineral, elemental Ni; hard; metallic; silver-white; a
native metal, esp. in meteorites; also alloyed with iron in meteorites.
b. A silvery white, hard, malleable, ductile, somewhat ferromagnetic
element. Symbol: Ni. It takes on a high polish and is a fair conductor of
heat and electricity. Used for making stainless steel and other
corrosion-resistant metals and is chiefly valuable for the alloys it
forms. Also used extensively in coinage, in desalination plants for
converting sea water into fresh water, and in making nickel steel for
armor plate and burglar-proof vaults. Handbook of Chemistry and Physics, 3
Sulfantimonide of nickel, crystallizing in the cubic system. Also called
ullmannite. CMD
A green hydrated and oxidized patina on rock outcrops indicating the
existence of primary nickel minerals; specif. annabergite (a nickel
arsenate). The term is also applied to zaratite (a nickel carbonate) and
to morenosite (a nickel sulfate). See also:annabergite
A volatile compound of nickel, Ni(CO)4 , formed by passing carbon
monoxide over the heated metal. The compound is decomposed into nickel and
carbon monoxide by further heating. It is used on a large scale in
industry for the production of nickel from its ores by the Mond process.
CTD
See:gersdorffite
See:annabergite
Containing nickel.