Other continuous-action elevators and conveyors, for goods or materials: — Specially designed for underground use
810402 · 1995-06-05 — The tariff classification of chain conveyors and chain tensioners from Great Britain
The models LW-1030 and LW-1035 chain-type transfer conveyors or stage loaders are used with longwall mining systems. Such systems utilize a shearing machine, conveyors and self-advancing hydraulic roof supports in order to continuously mine coal. The roof supports are installed side by side along the face of an underground coal seam, thus forming an overhead canopy which prevents the mine roof from collapsing as the coal is sheared off. The coal falls onto a face conveyor which ends at the transfer conveyor. One end of the transfer conveyor is connected at a right angle to the face conveyor,…
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