A conveyor in which the belt is driven by the head pulley without a snub
pulley. NEMA, 2
head-pulley-snub-drive conveyor
A conveyor in which the belt is driven by the head pulley with a snub
pulley. NEMA, 2
Sluice aqueduct, leat, or launder that leads water to head of operation or
to waterwheel. A forebay. Pryor, 3
Height between the floor and the roof in a mine opening. Long
In any system of rope haulage, the rope that is used to pull the loaded
transportation device toward the discharge point. In scraper loader work,
the headrope pulls the loaded scoop from the face to the dumping point.
Jones, 1
a. In ore dressing, the feed to a concentrating system. CF:tails
b. Low-grade material overlying an alluvial placer. AGI
c. In New York and Pennsylvania, a local term applied by bluestone
quarrymen to the open joints that run north and south.
d. See:headings
e. Scot. Large top coal on a loaded hutch.
f. Aust. Small faults.
g. Low-grade wash overlying the wash proper. Nelson
h. Can. Material taken from ore in treatment plant and containing the
valuable metallic constituents. Opposite of tails. Hoffman
A term used in both belt and chain conveyor work to designate that portion
of the conveyor used for discharging the coal. Jones, 1
The shaft mounted at the delivery end of a chain conveyor, on which is
mounted a sprocket that drives the drag chain. The shaft, in turn, is
driven by means of a drive chain from the speed reducer of the power unit
through a sprocket mounted on the shaft end. Jones, 1
Pulley in headgear of the winding shaft over which the hoisting rope runs.
See also:winding sheave
N. Staff. The rise side of a heading driven on the strike.
See:headgear; headframe.
See:headframe
Corn. Water discharged through the adit level.
Any tank or vessel in the water circuit that is used to control the
delivery pressure of the water to the washing units. BS, 5
a. The horizontal timber at each side of a rectangular heading that
supports the headboard. See also:side trees
b. The cap piece of a heading set. Stauffer
The assay value of the heads or mill feed. Nelson
a. Retaining wall at both ends of a culvert or similar structure.
Hammond
b. A culvert sidewall; sometimes only the upstream wall.
Nichols, 1
The second set of excavations in post-and-stall work.
See also:crossheading
a. Arkansas. The cutting and other work done at the face of an entry.
Fay
b. The headframe with the headgear. Webster 2nd
a. Scot. To load up a tub (car) or truck above the top of the sides.
Fay
b. The soil carried above the sides of a body or bucket.
Nichols, 1
c. Newc. The refuse at the pit's mouth.