. Railroad structures and estimates . nloaded into a hopper at from 5 to 6cents less per ton than from flat-bottom cars by hand. WOOD TRESTLE COALING STATION. 473 Switching. — When coal is delivered in self-clearing cars anddumped into a hopper, tracks can be arranged so that cars canbe handled by gravity, without the need of a switcher, therebyreducing the cost of operation. There are a number of methods in vogue for the handling ofcoal for locomotive purposes; in general, however, it may besaid, — at least at terminals and busy points where a largenumber of engines are handled, — that two me
. Railroad structures and estimates . nloaded into a hopper at from 5 to 6cents less per ton than from flat-bottom cars by hand. WOOD TRESTLE COALING STATION. 473 Switching. — When coal is delivered in self-clearing cars anddumped into a hopper, tracks can be arranged so that cars canbe handled by gravity, without the need of a switcher, therebyreducing the cost of operation. There are a number of methods in vogue for the handling ofcoal for locomotive purposes; in general, however, it may besaid, — at least at terminals and busy points where a largenumber of engines are handled, — that two methods predominate,either the elevated trestle type of coaling plant with trestleapproach is used, or the mechanical type of plant where the coalis handled by machinery and carried to elevated pockets isadopted. The chute known as the White type is very common,especially on western roads. The general construction of thischute is shown on Fig. 221. The chutes maybe on one or bothsides of the shed, depending upon local WHITE PATENT COAL CHUTE
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