York. Undergoing disturbance due to weight of the roof. A settling of the
mine roof.
A diagonal brace designed to resist wind or other horizontal force acting
on a structural framework. Hammond
a. Eng. To burn slowly.
b. To melt and run down; to waste away without feeding the flame. A candle
is said to sweal when the grease runs down owing to its burning in a
strong current of air or being improperly carried or fixed.
a. To gather surface moisture in beads as a result of condensation. The
roof of a mine is said to sweat when drops of water are formed upon it, by
condensation of steam formed by the heating of the waste or goaf.
Webster 3rd
b. To exude nitroglycerin; said of dynamite in which nitroglycerin
separates from its adsorbent. Webster 3rd
See:thawing
a. The condensation of moisture and distillation products on the surface
of a roast heap, forming a damp and sticky crust. Fay
b. See:exudation
Bringing small globules of one of the low-melting constituents of an alloy
to the surface during heat treatment, such as lead out of bronze.
ASM, 1
A hexagonal mineral, NaBe4 SbO7 ; at Laangban, Sweden.
See:chisel bit
An iron of highest quality owing to the freedom from phosporus and sulfur
of the Swedish ore. Crispin
A compass in which a magnetic needle is suspended on a jewel and a stirrup
so that it can rotate about both a horizontal and a vertical axis.
AGI
a. Aust. That part of a branch that reunites with the main vein farther
on.
b. In founding, a profile pattern, used esp. in forming molds for
cylindrical or other symmetrical articles. Standard, 2
c. A form or template used for shaping sand molds or cores by hand.
ASM, 1
d. A curved metal blade projecting from the central shaft of a pug mill to
force clay through holes at the bottom. Standard, 2
See:sweeps
Stationary circular buddle provided with rotating brushes that prevent
formation of channels as pulp flows radially across. Pryor, 3
Eng. Curved plates for barrowways at a turn. A turnsheet.
a. The dust of the workshops of jewelers, goldsmiths, silversmiths, and
assayers and refiners of gold and silver. Also called sweeping.
b. Brushwood arms on round buddles that rotate slowly and break down
channels as ore slime runs across the surface. Pryor, 3
Valuable metal washed from sweeps. Standard, 2
a. Eng. Free from combustible gases or other gases, or from fire stink.
b. Applied to potable water and to oil and gas free of hydrogen sulfide.
c. Said of crude oil or natural gas that contains few or no sulfur
compounds. CF:sour
Applied to those minerals that have the taste of alum.
See:dead roast
Complete roasting or until arsenic and sulfur fumes cease to form.
See also:roasting