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a. Working laid out in districts or panels, which are then extracted as
single units. The panel system of working may be adopted with
pillar-and-stall and longwall methods.
See also: pillar methods of working
b. A system of working coal seams in which the colliery is divided up into
large squares or panels isolated or surrounded by solid ribs of coal of
which a separate set of breasts and pillars is worked, and the ventilation
is kept distinct; i.e., every panel has its own circulation, the air of
one not passing into the adjoining one, but being carried direct to the
main return airway. Zern
Source:
Dictionary of Mining, Mineral, and Related Terms
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