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Oct 28, 2018 · Before that I worked down a coal mine for 13 years "On and around the coal face" as we used to call it. I did face machinery, sewage pumps, slurry pumps, methane drainage, headings, ventilation, HPW cutters, worked on the nucleonic shearer program, SERDS, DERDS, panzers, Dosco road headers and Trepanners, conveyors, graders, vibro plants .

P15 - 1993 - Bob Bradley

An overland conveyor about 1 mile long from the drift mouth transported coal to the coal prep plant. In 1991 the first retreat face in Blackshale at 1.1m thick achieved 17,000 tonnes a week. The face was equipped with 155 Gullick Dobson 4x340 IFS chocks and 2 x AS800 SERDS .

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P15 - 1993 - Bob Bradley

An overland conveyor about 1 mile long from the drift mouth transported coal to the coal prep plant. In 1991 the first retreat face in Blackshale at 1.1m thick achieved 17,000 tonnes a week. The face was equipped with 155 Gullick Dobson 4x340 IFS chocks and 2 x AS800 SERDS .

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Generally, 3 start vanes (spirals) are used in soft and easily cuttable coals. For coal which is exceptionally hard or woody and does not easily breakout, then 4 starts or higher vanes is preferable. In very thick seam mining, some drums have a pre-cutter attachment which are used to aid better coal cutting. Cutting picks are also carried on .

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An overland conveyor about 1 mile long from the drift mouth transported coal to the coal prep plant. In 1991 the first retreat face in Blackshale at 1.1m thick achieved 17,000 tonnes a week. The face was equipped with 155 Gullick Dobson 4x340 IFS chocks and 2 x AS800 SERDS .

Vertical Shearer | Coal, Colliery and Mining Forum.

Dec 25, 2011 · Just a bit before my time and probably yours garryo, but I think the concept of what you are describing, was used (or attempted to be used) long before the Trepanner or Anderton Loader (so called), a low seam application of a vertical pillar type shearer attachment was added to the return end sprocket of the AB 15 / 16" cutter jib.

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