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Check determinations of fusibility of coal ash with the De Graaf electric coal-ash fusion furnace

Check determinations of grindability of coal by various methods

Low-temperature distillation tests of subbituminous coal from the Denver region coal field, Colorado

Notes on the sampling and analysis of coal

Carbonizing properties and petrographic composition of Pond Creek bed coal from Majestic mine, Majestic, Pike County, Ky.

Carbonizing properties and petrographic composition of High Splint bed coal from Closplint mine, Closplint, Harlan County, Ky.

Carbonizing properties and petrographic composition of washed and unwashed Lower and Upper Kittanning-bed coals from mines 72 and 73, Johnstown, Cambria County, Pa.

Carbonizing properties and petrographic composition of Sewell bed coal from Wyoming Mine, Wyoming County, W. Va., and the effect of blending this coal with Alma bed coal

Carbonizing properties and petrographic composition of Pittsburgh-bed coal from Bureau of Mines Experimental mine, Bruceton, Allegheny County, Pa.

Classification chart of typical coals of the United States :showing B.t.u. per pound on the moist, mineral-matter-free basis, plotted against fixed carbon on the dry, mineral-matter-free basis


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