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Section 1 1482kb	Introduction			5
	Acknowledgements			8
	Origin, composition, and properties of coals			10
		Inspection, sampling and analysis		10
			Analyses of Tennessee and Georgia coals	12
		Constitution, properties, and analytical methods		12
			Petrologic studies of coal and rock cores from exploration projects	12
			Methods of petrological study	13
			Definition of "typical" coal	13
			Petrology of coal-column samples from operating mines	13
Section 2 1129kb			Electron-microscope studies of coal and of Fischer-Tropsch catalysts	15
			Tests of miscellaneous materials	18
			Determination of surface moisture in coal	19
			Analyses of ash from coals of the United States	20
			Calorific value of coal	20
			Physical properties of coal	20
Section 3 1783kb			Resins in coal	21
	Coal mining			21
		Experimental mine and dust explosions		21
			Technical assistance and service to others	21
			Studies of coal-mine roof	22
			Allaying dust in coal mines	22
			Application of rock dust in coal mines	23
			Inflammability and explosibility of industrial dusts and powders	23
			New gallery tests of dust explosions	24
		Exploration of coal deposits		25
			Coking coals	25
Section 4 1253kb			Coal reserves in areas of critical fuel supplies	29
			Exploration by the Mining Branch	31
		Mining methods and practices		31
			Coal strip mining	31
			Hazards of strip mining	32
			Mechanical mining of anthracite	32
			Flood prevention in anthracite mines	33
			Permissibility schedule for Diesel mine locomotives	33
			Effect of pressure on exhaust gases from Diesel engines	33
			Relationship of safety and efficiency in coal mining	34
			Roof control	34
			Haulage accidents	35
			Coal-mine hoisting	35
			Inspection standards for bituminous-coal and lignite mines	36
			Inspection standards for anthracite mines	36
			Coal-mine explosions and fires during the fiscal year 1944	36
			Electrical hazards of fires and explosions	37
			Fuel for flame-safety lamps	37
			Procedure for investigating explosion-proof mine equipment	37
Section 5 1480kb			Permissible mine equipment	38
			Hazards of auxiliary fans in coal mines	38
			Design of ventilation air-injectors	38
			Coal-mine health hazards	39
		Use of explosives and gaseous explosions		40
			Increase in charge limit of permissible explosives	40
			Gallery test of permissible explosives	41
			Demonstrations of safety of explosives	43
			Routine and special tests on explosives	43
			Consumption of permissible explosives	44
			Lists of permissible explosives	44
			Gallery tests of sheathed explosives	44
Section 6 1376kb			Effect of sheaths on poisonous gaseous products from permissible explosives	45
			Sensitivity of explosives to initiation by electrostatic discharges	46
			Effect of humidity on sensitivity and dispersion of black powder	47
			Miniature-cartridge test for detonators	48
			Determination of explosibility of potassium perchlorate and of mixture containing potassium perchlorate	49
			Surface storage of explosives	51
			Disposal of deteriorated explosives	51
			Ignition temperatures of isobutane-air mixtures	51
			Prevention of benzene-air explosions by addition of inert gases	51
			Acetylene-generator explosions	52
	Preparation of coal			53
		Recovery of waste coal		53
		Preparation of special low-ash coal		53
Section 7 1936kb		Removal of extraneous material from coal		54
		Precision jigging of coal		55
		Characteristics of coal-cleaning processes		56
		Chemistry of coal cleaning		57
		Preparation tests of Toledo, Wash., lignite		57
		Miscellaneous washability examinations		57
		Reclaiming of beehive coke		58
	Storage of coal			58
		Action of coal in storage		58
			Consulting service to Government establishments	59
			Effect of oxidation on physical and chemical properties of coal	60
	Utilization of coal			60
		Combustion		60
			Fuel-engineering service	60
		Boiler feed-water conditioning		61
		Boiler feed-water research		62
		Fly-ash separator for use in homes		63
Section 8 1333kb		Smoke abatement		64
		National Fuel Efficiency Program		64
		Properties of coal ash as related to clinkering and slagging		65
		Thermal conductivity of coal-ash slags		66
		External corrosion of furnace-wall tube		67
		Utilization of mixtures of bituminous coal and anthracite		68
		Burning solid fuels on traveling grates		69
Section 9 1517kb		Burning characteristics of fuels		71
		Stability and structure of burner flames		71
	Carbonization and gasification			71
		Small-scale laboratory tests of coking coals		71
		Carbonizing properties of American coals		73
Section 10 1722kb		Effect of temperature and rate of heating on carbonization yields		82
		Durability of coking power of various coals		83
		Plasticity of coals		84
		Swelling properties of coal during the coking process		90
Section 11 2214kb		Use of anthracite in coke-oven charges		93
		Control of bulk densities of coke-oven charges		93
		Coke for western steel production		94
		Control of combustion in beehive-coke ovens		95
		Low-temperature carbonization of Alaskan coals		95
		Gasification of subbituminous coal and lignite		96
Section 12 470kb		Mineral wool from Rhode Island anthracite		101
		Use of barley-size anthracite in gas producers		101
		Carbon monoxide generator		101
	Liquefaction			101
		Literature reviews and abstracts		101
		Inspection of synthetic liquid fuel plants in Germany		103
		Reaction mechanisms in hydrogenation of coal		103