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lump coal

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lump coal [′ləmp ‚kōl]
(mining engineering)
Bituminous coal that passes through a 6-inch (15-centimeter) round mesh in initial screening.


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00 Paperback TP325 A consultant in fossil fuel analysis and quality management based in New Jersey, Nadkarni lists the ASTM methods for measuring such characteristics as carbon and hydrogen in coal and coke, mercury, plasticity of coal, sieve analysis, specific gravity of lump coal, and washability.
Krupp, a Germany company, supplied much of the machinery--including the cranes, a conveyor belt system and the mills to grind lump coal to powder.
The development of mine run laws in 1897 that required miners to be paid for slag, not just lump coal, slowed the incessant digging of large cavernous holes.
 
 
 
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