See:alluvial plain
Rounded, waterworn masses of quartz found in stream gravels.
See:creek right
Natural gravel as found in deposits that have been subjected to the action
of running water. See also:alluvial deposit
Sand generally composed of rounded particles, and may or may not contain
clay or other impurities. It is obtained from the banks and beds of
rivers. Zern
Eng. To crack open or produce fissures.
A round bar of mild steel having a conical, cup- or pan-shaped head, which
is driven while red hot into a hole through two plates of steel that have
to be joined together. Aluminum, copper, and other materials are also used
for rivets. See also:pneumatic riveter
A worker who forms the head of a rivet, generally with a pneumatic rivet
hammer. Hammond
A portable forge, used by boilermakers and ironworkers, for heating rivets
near the work for which they are required. Crispin
A laborer responsible for heating rivets in a portable forge and throwing
them with tongs to the rivet catcher. Hammond
A punch having a recess in its head shaped to the form of the rivet.
See also:pneumatic riveter
A test on the steel used for rivets, in which a bar is bent through 180
degrees ; if any cracks are formed, the steel is rejected. Hammond
A trained worker who can detect sound or loose rivets by testing them with
a hammer. Hammond
Open fissures between beds of rock in a quarry.
A method for converting pig iron into a product with a low carbon content,
which is suitable as a substitute for steel scrap for remelting in steel
furnaces. Osborne
a. A roadway in a mine, e.g., gate road, traveling road, dummy road.
Nelson
b. Any mine passage or tunnel. Mason
c. Rail track. Mason
a. The material fundamental part of a road; primarily, the foundation of
gravel, road metal, etc., constituting the bed, but by extension, esp. in
railway use, the superstructure also. Standard, 2
b. The foundation carrying the sleepers, rails, chairs, points, and
crossings, etc., of a railway track. CTD
See:track cleaner
Dust found on the floor of a mine entry. Rice, 2
The face of a roadway, usually in longwall conveyor mining. The records
indicate that the roadhead is the most dangerous place in a coal mine
based on accidents from falls of ground. See also:ripping face support
Nelson
Various types of specialized plant used solely for road construction,
including such machines as planers, scarifiers, rollers, pavers,
finishers, gritters, and mixers. Hammond