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Mining
Glossary
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Timber - Any of the wooden props,
posts, bars, collars, lagging, etc., used to support mining works.
One of the steel joists or beams which, in some mines, have replaced
wooden timbers.
Timbering - The operation of setting timber
supports in mine workings or shafts. The term support would cover
the setting of timber, steel, concrete, or masonry supports.
Timbering Machine - An electrically driven machine
to raise and hold timbers in place while supporting posts are
being set after cut to length by the machine's power-driven saw.
Tipple - Originally the place where the mine
cars were tipped and emptied of their coal, and still used in
that sense, although now more generally applied to the surface
structures of a mine, including the preparation plant and loading
tracks.
Trailing Cables - A flexible electric cable
for connecting portable face machines and equipment to the source
of supply located some distance outby. The cable is heavily insulated
and protected with either galvanized steel wire armoring, extra
stout braiding hosepipe, or other material.
Trolley Wire - The means by which power is conveyed
to an electric trolley locomotive. It is hung from the roof and
conducts power to the locomotive by the trolley pole. Power from
it is sometimes also used to run other equipment.
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