A long-period vertical seismograph suspended system adapted to the
measurement of gravity differences. Sensitivity is achieved by adjusting
the system to proximity to an instability configuration. AGI
A monoclinic mineral, NaAl(PO4 )F ; isostructural with durangite;
in cavities in granite pegmatites.
In flotation, a depressant sometimes used to depress iron minerals.
Pryor, 3
Pertaining to, formed in, growing in, or inhabiting lakes.
a. The arm that carries the tumblers and bucket line of a dredge.
Fay
b. The continuous line of mud buckets, carried on an oblique endless
chain, in a bucket ladder excavator or dredger. CTD
c. The digging boom assembly in a hydraulic dredge or chain-and-buckets
ditcher. Nichols, 1
An excavator that digs ditches by means of a chain of traveling buckets
supported by a boom.
Arrangement used in large-scale rock tunneling. Retractable drills with
pneumatic power legs are mounted on prefabricated steel ladders in tiers,
connected into a holding frame or jumbo. As many as 22 drills can be
worked simultaneously by a small labor force. Pryor, 3
See:ladder vein
A platform at the bottom of each ladder in a series. Standard, 2
One of a series of mineral deposits in transverse, roughly parallel
fractures that have formed along foliation planes perpendicular to the
walls of a dike during its cooling or along shrinkage joints in basaltic
rocks or dikes. Syn:ladder lode
a. See:manway
b. Mine shaft, raise, or winze between two main levels, equipped with
ladders. Pryor, 3
c. The particular shaft or compartment of a shaft containing ladders. Also
called ladder road. Fay
a. Scot. A load.
b. A watercourse, ditch, or drain.
c. The mouth of a river.
Molten glass dipped from a melting pot to a casting table. Also called
gathered metal. Standard, 2
In glassmaking, an orifice through which melted glass is ladled or taken
out by a cuvette. Standard, 2
a. In a smelter or foundry, a steel-holding vessel used in the transfer
and transport of molten metal, matte, or slag. Pryor, 3
b. A long-handled, cup-shaped tool for ladling glass out or from one spot
to another. Also used for filling open pots. ASTM
In foundry work, addition of special metals (e.g., granulated nickel) or
compounds (e.g., ferrosilicon) to molten iron in ladle to produce special
qualities in castings. Pryor, 3
In the iron and steel industry, a person who places ladles under the
tapholes of furnaces and holds them in position while the metal is poured
into them. Also called charging floor crane operator; ladle crane
operator; steel charger. DOT
In metallurgy, a person who transfers molten metal from the furnace into a
ladle and skims and fluxes metal preparatory to casting. DOT
A small furnace for calcining or melting substances in a ladle.
Standard, 2
In ore dressing, smelting, and refining, a person who repairs and relines
pouring ladles used to transport molten metals, such as iron, steel, and
copper. Also called ladle cleaner; ladle dauber; ladle houseman; ladle
mender; ladle patcher; ladle repairman. DOT