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Section 1 1015kb	Introduction			1
	Acknowledgements			2
	Origin, composition, and properties of coals			4
		Inspection, sampling, and analyses		4
			Fundamentals of coal sampling	5
			Analyses of Kentucky coals	5
			Analyses of Pennsylvania anthracitic coals	6
		Constitution, analytical methods, and standardization		6
			Rare and uncommon chemical elements in coal	7
			Yields of primary tar and light oil from coals of various ranks and types	7
			Comparison of standard test sieves	8
			Application of the Rosin-Rammler law for screening coal	8
			Precision of the volatile matter determination	9
			Standardization of proximate analysis	9
			Cooperative investigation on fusibility of coal ash	9
	Coal Mining			9
		Experimental mine and dust explosions		9
			Studies of coal-mine roof	9
Section 2 1043kb			Application of rock dust in coal mines	10
			Increase in charge limit of permissible explosives	10
			Explosibility of North Dakota lignite dust in air	11
			Inflammability and explosibility of industrial dusts	11
			Explosibility of powders from the plastics industry	12
			Precision measurements of minimum static electric sparks	12
		Mining methods and practices		13
			Pillar extraction	13
			Coal strip mining	14
			Control of sulphur and ash in mine-run metallurgical coal	14
			Roof control	14
			Use of Diesel engines underground	15
			Grounding electrical equipment in coal mines	15
			Ground-resistance measurements of drill-hole casings	16
			Air flow at fan-pipe lines discharge	16
			Mine-fan signal alarms and power releases	17
			Construction of mine ventilating doors	17
			Precautions for old mine workings	17
			Permissible mine equipment	17
		Gas explosions and use of explosives		17
Section 3 715kb			Burning rate of fuse	18
			Inflammability and ignition temperatures of acetic anhydride	18
			Acetylene-generator explosions	18
			Hazards from common gases and vapors	19
			Coal-mine explosions and fires during the fiscal year 1943	19
			Use and misuse of flame safety lamps	20
			Accidents due to misuse of explosives	20
		Exploration for new colas		20
			Coking coals	20
			Coal reserves in areas of critical fuel supplies	21
			Examination and reports for the Smaller War Plants Corporation	21
	Preparation of Coal			22
		Improvement of coals for special purposes		22
			Preparation of coal for production of synthetic liquid fuels	22
			Low-ash coke for carbon electrodes	22
			Marginal special-purpose coals	23
		Miscellaneous preparation studies		23
			Development of improved methods of coal preparation	23
			Characteristics of coal and its associated impurities	24
			Washability studies	24
			Mechanical cleaning	25
			Concentrating tables	25
			Screening of coals	25
			Methods for loading colas	26
	Storage of coal			26
		Action of coal in storage		26
		Pointers on the storage of coal		27
Section 4 765kb		Preventing spontaneous combustion in stored coal		27
		Storage of subbituminous coal		28
		Influence of storage on caking and coking properties of coal		30
		Spontaneous heating of stored coal		32
	Utilization of coal			32
		Combustion		32
			Fuel-engineering services	32
		Boiler feed-water conditioning		32
		Smoke abatement		33
		How to save fuel		34
		National Fuel Efficiency Program		34
Section 5 957kb		Mixtures of coal and oil		35
		Utilization of small-size anthracite		36
		Supplementing anthracite with other fuels from home heating		37
		Studies of packaged fuel		37
		Automatic stoker for heating water		38
		Properties of coal ash as related to clinkering and slagging		38
		Thermal conductivity of coal-ash slags		39
		External corrosion of furnace-wall tubes		39
		Burning solid fuels on traveling grates		40
		Reactivity of solid fuels by the ignition-point method		40
		Stability and structure of burner flames		40
Section 6 1434kb	Carbonization and gasification			41
Section 6 1434kb		Carbonizing properties of American coals		46
Section 7 1063kb		Coke from blends of coal and its coke breeze		53
		Coke from blends of coal and low-temperature coke		54
		Laboratory tests of coking properties of western coals		54
		Byproduct coke-oven tests of Washington coals		57
		Tests of the Heliopore coal-carbonization power-plant process		61
Section 8 1299kb		Effect of acids and alkalies on carbonization products		62
		Influence of resins on coking properties		62
		Plasticity of coals		63
		Swelling properties of coal during the coking process		66
		Problems of metallurgical coke for western furnaces		68
		Beehive-coke production		69
Section 9 1435kb		Effect of compression of coal charge on coke production		70
		Producer-gas investigations		72
	Liquefaction			72
		Bureau of Mines research		72
		Mechanism of coal-hydrogenation processes		73
		Catalysts for primary liquefaction of coal by hydrogenation		75
		Synthesis of liquid fuels by hydrogenation of carbon monoxide catalysts and reaction mechanism		75
		Effect of pressure and dilution of synthesis gas with nitrogen		77
Section 10 2833kb		Research of water-gas production		78
Section 10 2833kb		Development work on the Fischer-Tropsch process		78