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Pelletol

A waterproof, free-running blasting agent. Pelletol is a high explosive,
but is not considered cap sensitive and normally cannot be initiated with
a cap, except under perfect confinement in small-diameter boreholes.
Du Pont, 1

pellet powder

Black powder pressed into cylindrical pellets 2 in (5.1 cm) in length and
varying from 1-1/4 to 2 in (3.2 to 5.1 cm) in diameter. Each pellet has a
3/8-in (9.5-mm) hole through its center to permit fuse insertion.
Carson, 1

pellet texture

A concretionary texture characterized by minute pellets of colloidal or
replacement origin and closely resembling oolites. Schieferdecker

pell-mell structure

Coarse deposits of waterworn materials in which there is an absence of
bedding. AGI

pelter

A worker employed in a coal mine to take down pelt (shaly stone) from the
roof of a narrow seam, to make enough height for a coal cutting machine.
CTD

Pelton wheel

An impulse water turbine with buckets bolted to its periphery, which are
struck by a high velocity jet of water. This turbine is most efficient
under a head of from 900 to 1,000 ft (274 to 305 m) or more.
See also:impulse turbine

pelyte

See:pelite

pena

A large stone or boulder. Etymol: Spanish, "rock."

penalty

a. In connection with a contract for purchase of mineral concentrates by a
custom smelter, a deduction from an agreed price for failure to reach an
agreed assay value or to eliminate specified contaminants; charged at so
much per unit of mineral or metal concerned. Pryor, 3
b. In a construction contract, a penalty clause is one that imposes a
penalty for failure to complete work to agreed time, specification, etc.
Pryor, 3

Penang tin

Pig tin of about 99.95% purity, obtained from the Penang Mines in
Malaysia. Bennett

Penberthy anoloader

A simple powder loader with a high air velocity that is used in Canada in
underground work for charging holes with a depth of up to 14 ft (4 m).

pencil-core bit

The very-thick-wall, medium-round nose bit that cuts a pencil-size core.
The bit is essentially a noncoring bit, and in most instances no attempt
is made to recover the very-small-diameter core as a sample.
Syn:pencil-coring crown

pencil-coring crown

See:pencil-core bit

pencil ganister

A variety of ganister characterized by fine carbonaceous streaks or
markings; so called from the likeness of these to pencil lines. The
carbonaceous traces are often recognizable as roots and rootlets of
plants. AGI

penciling

Reduction in the fire face area of the brick, in which slag erosion at the
joints is pronounced.

pencil mark

Aust. A thin bed of dark slate, about the thickness of the lead of a
carpenter's pencil, that is parallel to the indicator.
See also:indicator

pencil ore

Hard, fibrous masses of hematite that can be split up into thin rods.
CMD

pencil stone

A compact pyrophyllite used for making slate pencils. Webster 3rd

pencil structure

A very pronounced lineation, such as that produced by intersecting bedding
and cleavage planes in slate.

pendant

See:roof pendant

pendletonite

See:karpatite