A boiler designed esp. for gas or oil and sold integrally with the burner.
Strock, 2
A pump, usually of the single-stage, single-entry, overhung type, that
must have low suction loss and high-temperature features since it draws
water directly from the boiler drums at high saturation pressure and
temperature. Sinclair, 4
A water-jacketed reverberatory furnace for decarbonizing iron by a process
in which the carbonic oxide escapes with an appearance of boiling.
Standard, 2
a. The temperature at which a liquid begins to boil or to be converted
into vapor by bubbles forming within its mass. It varies with pressure.
Standard, 2
b. The temperature at which a cooling gas becomes a liquid.
Hurlbut
Hard calcareous or siliceous nodules of irregular shape, found in the
shales and underclays of the Coal Measures. See also:boylom
Arkell
See:bole
Any of several varieties of compact earthy clay (impure halloysite),
usually red, yellow, or brown because of the presence of iron oxide, and
consisting essentially of hydrous silicates of aluminum or less often of
magnesium. It is a waxy decomposition product of basaltic rocks, having
the variable composition of lateritic clays. Syn:bolar
A deep blue pseudoisometric hydrous oxychloride of lead, copper, and
silver from Boleo, Lower California. A tetragonal form of percylite.
Fay
An electrical stable gravimeter with a moving system suspended on a pair
of bowed springs. The moving system carries electrical condenser plates at
each end, one to measure the position of the moving system, the other to
apply a balancing force to bring the system to a fixed position.
Syn:Lindblad-Malmquist gravimeter
See:Bologna stone
See:Bologna stone
A nodular, concretionary, or round variety of barite, composed of
radiating fibers; phosphorescent when calcined with charcoal.
Syn:Bolognian stone; Bolognan stone; Bologna spar.
See:Bologna stone
a. A term applied in the desert regions of the Southwestern United States
to an extensive flat alluvium-floored basin or depression, into which
drainage from the surrounding mountains flows toward a playa or central
depression; a basin with internal drainage. Syn:playa basin
AGI
b. A temporary lake, usually saline, formed in a bolson. AGI
c. Mex. A pocket of ore. Etymol: Sp., bolson, large purse.
Applied to a method of working by single panels. Single 100-yd (91-m)
panels are advanced, leaving 100-yd-wide coal pillars between them. The
pillars are then worked on the retreat after the advancing faces have
reached a limit line. Nelson
A rod used in roof bolting. See also:slot-and-wedge bolt;
wedge-and-sleeve bolt. Nelson
S. Staff. A short narrow opening made to connect the main workings with
the airhead or ventilating drift of a coal mine. Also called bolt.
A special round brush used to remove porcelain enamel bisque from in and
around small openings in the ware. See also:brush
Separation of particles of different sizes by means of vibrating sieves.
Bennett
a. In oceanography, a silk cloth of very fine and regular mesh, used in
the construction of tow nets for the smaller members of the surface fauna.
CTD
b. Also used to cover a lap for polishing rock and mineral specimens for
microscopic examination.
¦
@H ¦J }ÓÆ „ DICTIONARY TERMS:Bolton's reagent An etching reagent for cast iron t
[\B]Bolton's reagent[\N]
A monoclinic mineral, HK(UO2 )SiO4 .1-1/2H2 O ;
analogous to sklodowskite, having potassium in place of magnesium;
radioactive; yellow.