coal sizing and classification

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coal sizing and classification

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GRADES AND SIZES OF COAL As the super-economy of the Spencer's operation de- pends on the low-priced grades of coal which it can burn successfully, we give herewith a classification of the various coals on the market. It is presented for your convenience in taking up the question of compara- tive prices with your coal dealer.

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Anthracite - Wikipedia

The common American classification by size is as follows: [citation needed] Lump, steamboat, egg and stove coals, the latter in two or three sizes, all three being above 1 1 ⁄ 2 in (38 mm) size on round-hole screens. High grade. High grade (HG) and ultra high grade (UHG) anthracite are the highest grades of anthracite coal.

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