PUBLICATION LIST - JOHN C. CRELLING

Books:

Crelling, John C., 1996, Atlas and Notes for a Short Course on the Petrology of Cokes, Chars, Carbons, and Graphites: Coal Reseach Center, Southern Illinois University, Carbondale, IL

Anderson, Ken B. and Crelling , J. C., eds., 1995, Amber, Resinite, and Fossil Resins, ACS Symposium Series 617, American Chemical Society, Washington, D. C., 297p.

Crelling, John C., Bensley, David F., Landis, Charles L., Rimmer, Susan M. 1989, Fluorescence Microscopy-Workshop Lecture Notes: Special Pub. 3. The Society for Organic Petrology, 130 p.

Winans, Randall E. and Crelling, John C., 1984, Editors-Chemistry and Characterization of Coal Macerals: American Chemical Society Symposium Series 252, American Chemical Society, Washington, D.C. 184p.

Crelling, John C. and Dutcher, Russell R., 1980 Principles and Applications of Coal Petrology: Society of Economic Paleontologists and Mineralogists Short Course Notes No. 8, 127 p.

PUBLISHED PAPERS:

105. Hutton, Toby J., McEnaney, Brian, and Crelling, John C., Structural studies of wear debris from carbon-carbon composite aircraft brakes: Carbon, in press.

104. Gibbins, J. R., Beeley, T. J., Crelling, J. C., Scott, A. C., Skorupska, N. M., and Williamson, J., 1999, Observations of heterogeneity in large pulverized coal particles: Energy and Fuels, v. 13, no. 3, p. 592-601.

103. Crelling, John C. and Gray, Ralph J., 1998, Optical microscopy: a unique and versatile tool for studying coals and carbons: Preprints - Div. of Fuel Chem., Am. Chem. Soc., v. 43, no. 4, p. 924-928.

102. Han Z., Kruge M. A., Crelling J. C., and Bensley D. F., 1998, Classification of torbanite and cannel coal I: Insights from petrographic analysis of density fractions: International Journal of Coal Geology, v. 38, nos. 3-4, p. 181-202.

101. Crelling, John C., and Kruge, Michael A., 1998, Petrographic and chemical properties of resinite from the Herrin No. 6 coal seam: International Journal of Coal Geology, v. 37, nos. 1-2, p. 55-71.

100. Chapter 5. Iron - by John C. Crelling and 51 other authors in Handbook of Extractive Metallurgy: Wiley-VCH, New York, p. 29-268.

99. Crelling, John C., Filip, Peter, and Wright, M. A., 1997, Characterization of carbon and other components in automobile brakes with density gradient centrifugation: Extended abstracts and program,- 23rd Biennial Conference on Carbon- American Carbon Society, v. II, p. 226-227224-225.

98. Milligan, Jimmy B., Thomas, K. Mark, and Crelling, John C.,1997, Temperature-programmed combustion studies of coal and maceral group concentrates: Fuel, v.76, no. 13, p. 1249-1255.

97. Milligan, Jimmy B., Thomas, K. Mark, and Crelling, John C.,1997, Solvent swelling of maceral; concentrates: Energy and Fuels, v.11, no. 2, p. 364-371.

96. Crelling, John C., Filip, Peter, and Wright, M. A., 1997, Petrographic characterization of carbon and other components in automobile brakes: Extended abstracts and program,-23rd Biennial Conference on Carbon- American Carbon Society, v. II, p. 224-225.

95. Honaker, M. K., Mohanty, M. K., and Crelling, J. C., 1997, Coal maceral separation using column floation: Part I. A fundamental Study: Minerals Engineering, v. 9, no. 4, p. 449-464.

94. Beeley, T., Crelling, J., Gibbins, J., Hurt, R.,Lunden, M.,Man, C., Williamson, J., and Yang, N., 1996, Transient high temperature thermal deactivation of monomaceral-rich coal particles: Proc. 26th Int. Combustion Symp., Naples, Italy

93. Sun,Jian, Hippo, E. J., Marsh, Harry, O'Brien, W. S., and Crelling, J. C., 1997, Activated carbon produced from an Illinois Basin coal: Carbon, v. 35, no. 3, p. 341-352.

92. Crelling, John C., 1996, Pilot plant testing of Illinois coal for blast furnace injection: Ironmaking Conference Proceedings-Iron and Steel Society of A.I.M.E, v. 55, p. 51-55.

91. Hutton, T. J., McEnaney, B., and Crelling, J., 1996, Density profiling studies of wear debris from carbon-carbon composite aircraft brakes: Extended Abstracts - European Carbon Conference, The British Carbon Group, p.417-418.

90. Hartgers, Walter A., Jaap, S., Sinninghe, Damste, de Leeuw, Jan W., Ling, Yue, and Crelling, John C., 1995, The influence of mineral matter on the separation of amorphous marine kerogens using density gradient separation: Organic Geochemistry, v. 23, no. 8, p. 777-784.

89. Crelling, John C., 1995, Coal combustion under conditions of blast furnace injection: Ironmaking Conference Proceedings-Iron and Steel Society of A.I.M.E, v. 54, p.73-79.

88. Crelling, J. C. and Bensley, David F., 1995, Characterization of carbon materials using quantitative optical microscopy: Preprints - Div. of Fuel Chem., Am. Chem. Soc., v. 40, no. 3, p. 435-438.

87. Crelling, John C. and Bensley, David F., 1995, Recent advances in separating and characterizing single coal macerals: In, Pajares, J. A. and Tascon, J. M. D., eds. Coal Science-Proceedings of the Eighth International Conference on Coal Science, Elsevier, Amsterdam, v. 1, p. 235-238.

86. Beeley, T. J., Crelling, J. C., Gibbins, J. R., Hurt, R., Man, C. K., and Williamson, J., 1995, Coal char reactivity characterization for burn-out prediction in utility boilers: In, Pajares, J. A., and Tascon, J. M. D., eds. Coal Science - Proceedings of the Eighth International Conference on Coal Science, Elsevier, Amsterdam, v. 1, p. 615-618.

85. Beeley, T. J., Crelling, J. C., Gibbins, Scott, A. C., and Williamson, J., 1995, Observations of maceral and mineral heterogeneity in pulverized coals: In, Pajares, J. A.,and Tascon, J. M. D., eds. Coal Science - Proceedings of the Eighth International Conference on Coal Science, Elsevier, Amsterdam, v. 1, p. 203- 206.

84. Michelin, K. H., Freestone, W. I., Hang, S. L., Gainsays, T., Crelling, J. C., and Gagarian, S. G., 1995, FT-IR spectroscopy of western Canadian coals and macerals: In, Pajares, J. A., and Tascon, J. M. D., eds. Coal Science - Proceedings of the Eighth International Conference on Coal Science, Elsevier, Amsterdam, v. 1, p. 255-258.

83. Crelling, John C., 1995, The petrology of resinite in American coals: In , Anderson Ken B. and Crelling , J. C., eds., Amber, Resinite, and Fossil Resins, ACS Symposium Series 617, American Chemical Society, Washington, D. C., p. 218-233.

82. Wang, Wanxing, Brown, Stephen D., Thomas, K. Mark, and Crelling, John C., 1994, Reactivity and nitrogen release from a rank series of coals during temperature programmed combustion: Fuel, v.73, no.3, p. 341-347.

81. Kruge, Michael A., Stankiewicz, Artur B., Crelling, John C., Montanari, Alessandro, and Bensley, David F, 1994, Fossil Charcoal in Cretaceous-Tertiary boundary strata: Evidence for catastrophic firestorm and Megawave: Geochemica and Cosmochemica Acta, v. 58, no. 4, p. 1393-1397

80. Bensley, David F. and Crelling, John C., 1994, Inherent heterogeneity in the vitrinite maceral group: Fuel, v.73, no. 8, p.1306-1316.

79. Hindmarsh, Christopher J., Wanxing Wang, Thomas, K. Mark, and Crelling, John C., 1994, The release of nitrogen during the combustion of macerals, microlothotypes, and their chars: Fuel, v. 73, no. 7, p. 1229-1234.

78 Palmer, S.R., Kruge, M. A., Hippo, E. J., and Crelling, John C., 1994, Speciation of hetroatoms in coal by sulfur- and nitrogen- selective techniques: Fuel, v. 73, no. 7, p. 1167-1172.

77. Stakiewicz, B. Artur, Kruge, Michael A., Crelling, John C., 1994, Salmon, Gary L., Density gradient centrifugation: Application to the separation of macerals of type I, II, and III Sedimentary organic matter, Energy and Fuels, v. 8, no. 6, p. 1513-1521.

76. Han, Zhiwen, Kruge, Michael A., Crelling, John C., and Stankiewicz, Artur B., 1994, Organic geochemical characterization of selected density fractions of a Permian torbanite: Organic Geochemistry, v. 21, no. 1, p. 39-50.

75. Bensley, David F. and Crelling, John C., 1994, The presence of remanent cell structure in vitrinite and its influence on reflectance properties: In, Mukhopadhyay, Prasanta K. and Dow, Wallace G. eds., ACS Symposium Series 570 - Reevaluation of Vitrinite Reflectance as a Maturity Indicator, Am. Chem. Soc., Washington D.C., p.39-51.

74. Stankiewicz, B. A., Kruge, M. A., and Crelling, J. C., 1994, Geochemical characterization of maceral concentrates from Herrin No. 6 coal (Illinois Basin) and Lower Toarcian shale kerogen (Paris Basin): In, Curnelle, R. and Severac, J. P., eds., Petrologie Organique, Recueil des Communications, Colloque International des Petrographes Organiciens Francophones, Pulb. Spec., Bull. Centres Rech. Explor.- Prod. Elf Aquitaine, v. 18, p. 237-251.

73. Crelling, John C., 1994, Targeting single coal macerals with density gradient centrifugation experiments: Preprints - Div. of Fuel Chem., Am. Chem. Soc., v.39, no. 1, p. 13-17.

72. Crelling, John C. and Thomas, K. Mark, 1994, Review of some recent research on the combustion properties of coal macerals: Preprints - Div. of Fuel Chem., Am. Chem. Soc., v. 39, no. 1, p. 209-213.

71. Bensley, D., Marsh, H, Crelling, J., and Johnson K. , 1994, Optical microscopy used in the quantitative reflectance mode to correlate structural and mechanical properties of carbon fibers: Extended Abstracts and Programme, Carbon 94, Spanish Carbon Group, Granada , Spain,

70. Crelling, John C., Thomas, K. Mark, and Marsh, Harry, 1993, The release of nitrogen and sulphur during the gasification of chars derived from lithotype and maceral concentrates: Fuel, v. 72, no. 3, p. 349-357.

69. Bensley, D., Murdie, N., Robinson, P., and Crelling, J., 1993, X-Ray characterization of carbon- carbon composites using density gradient separation techniques: Extended Abstracts and Program, 21st Biennial Conference on Carbon, American Carbon Society, p. 144-145.

68. Bensley, D., Murdie, N., Crelling, J., and Rawal, S., 1993, Direct quantification of optical anisotropy of carbons: Extended Abstracts and Program, 21st Biennial Conference on Carbon, American Carbon

Society, p.168-169.

67. Han, Zhiwen, Crelling, John C., and Zhou, Yi, 1993, Fluorescence intensity and alteration of coal macerals and their relation to coalification: Organic Geochemistry, v. 20, no. 6, p. 677-685.

66. Bensley, D. F. and Crelling, J. C., 1993, The use of rotational polarization reflectance in the characterization of fine particulate macerals: Proceedings of the IEA Int. Conf. on Coal Science, v. 1, 578- 581.

65. Han, Z. and Crelling J. C., 1993, Observations on the petrographic composition of Cannel and Boghead coals: Proceedings of the IEA Int. Conf. on Coal Science, v. 1, 144-147.

64. Kruge, Michael A., Stankiewicz, Artur B., and Crelling, John C., 1993, Aspects of the organic geochemistry and petrology of kerogen and coal macerals: in ed. Kjell Oygard, Organic Geochemistry, European Assoc. of Organic Geochemists, p. 141-144.

63. Bensley, David F., and Crelling, John C., 1992, In-situ microspectrophotometry of coal macerals: Advances in Coal Spectroscopy: Ed. H.L.C. Meuzelaar, Plenum Press, New York, p. 119-139.

62. Crelling, John C., Hippo, Edwin J., Woerner, Bruce A., and West, David P., 1992, Combustion characteristics of selected whole coals and macerals: Fuel, v. 71, no. 2, p. 151-158.

61. Nip, Margriet, de Leeuw, Jan W., and Crelling, John C., 1992, Chemical structure of a bituminous coal and its constituting maceral fractions as revealed by flash pyrolysis: Energy and Fuels, v. 6, no. 2, p. 125-136.

60. Palmer, S.R., Hippo, E.J., Crelling, J.C., and Kruge, M.A., 1992, Characterization and selective removal of organic sulfur from Illinois Basin coals: Coal Preparation, v. 10, p. 93-106.

59. Bensley, David F. and Crelling, John C., 1992, Low intensity spectral analysis (LISA) of coal macerals and the assessment of DGC fractions: Organic Geochemistry, v. 18, no. 3, p. 365-372.

58. Crelling, John C., Thomas, K. Mark, and Marsh Harry, 1992, Aspects of the combustion reactivity of coal macerals: Ironmaking Proceedings-Iron and Steel Society of A.I.M.E, v. 51, p.407-413.

57. Crelling, John C. and Hippo, Edwin J., 1992, A novel technique for evaluating cleaned fine and ultrafine coal: Proceedings - Eighth Ann. Coal Preparation, Utilization, and Environmental Control Contractors Conference, USDOE- PETC, Pittsburgh, PA, p. 501-508.

56. Dyrkacz, Gary R., Bloomquist, C.A.A., Ruscic, L., and Crelling, John C., 1991, An investigation of the vitrinite maceral group in microlithotypes using density gradient separation methods: Energy and Fuels, v. 5, no. 1, p. 155-163.

55. Kruge, Michael A., Crelling, John C., Hippo, Edwin J., and Palmer, Stephen R., 1991, Aspects of sporinite chemistry: Organic Geochemistry, v. 17, no. 2, p. 193-204.

54. Crelling, John C., Pugmire, Ronald J., Meuzelaar, Henk L.C., McClennen, William H., Huaying Huai, and Karas, Jirina, 1991, Chemical structure and petrography of resinite from the Hiawatha ¨B¨ coal seam: Energy and Fuels, v. 5, no. 5, p. 668-694.

53. Hippo, Edwin J. and Crelling, John C., 1991, Desulfurization of single coal macerals: Fuel Processing Technology, v. 27, no. 3, p. 287-306.

52. Crelling, J. C. and Bensley, D. F., 1991, Low intensity spectral analysis of liptinite, vitrinite, and inertinite macerals: 1991 Int. Conf. on Coal Science Proceedings, Butterworth Heinemann, London, p. 82-85.

51. Suarez-Ruiz, I., Crelling, J. C., and Bensley, D.F., 1991, Petrographic characterization of Spanish bituminous coals from the Central and Teverga Basins: 1991 Int. Conf. on Coal Science Proceedings, Butterworth Heinemann, London, p. 119-122.

50 . Palmer, S. R., Hippo, E. J., Kruge, M. A., and Crelling, J. C., 1991, Selective oxidation for the characterization of organic sulfur and nitrogen compounds in coal: 1991 Int. Conf. on Coal Science Proceedings, Butterworth Heinemann, London, p. 993-996.

49. Hippo, E.J., Crelling, J.C., Palmer, S.E., and Kruge, M.A., 1990, Organic sulfur compounds in coals: Proceedings; 14th Annual Conference on Fuel, Electric Power Research Institute, Palo Alto, California, EPRIGS 6827, P. 6/1-6/28.

48. Palmer, S.E., Hippo, E.J., Kruge, M.A. and Crelling, J.C, 1990, Characterization of organic sulfur compounds in coals and single macerals: In Orr, W.L. and White, C.M. ed., Geochemistry of Sulfur in Fossil Fuels: American Chemical Society Symposium Series 429, American Chemical Society, Washington, DC, p. 296-315.

47. Crelling, John C., Hippo, Edwin J., Woerner, Bruce A., and Gillespie, Eleanor M., 1990, Reactivity of Coal Macerals: Ironmaking Proceedings-Iron and Steel Society of A.I.M.E., v. 49, p. 211-217.

46. Hippo, Edwin J., Palmer, S., Kruge, M., Crelling, J., 1990, Organic sulfur characterization of low rank coals: Proceedings of the First International Symposium on the Bioprocessing of Coal, EPRI, Palo Alto, California, p. 1-15.

45. Kruge, M.A., Hubert, J.F., Bensley, D.F., Crelling, J. C., Akes, R.J., and Meriney, P.E., 1990, Organic geochemistry of a Lower Jurassic synrift lacustrine sequence, Hartford Basin, Connecticut, USA: Organic Geochemistry, v. 16, p. 689-701.

44. Nip, Margriet, de Leeuw, J.W., Scheneck, P.A., Windig, W., Meuzelaar, H.L., Crelling, J.C., 1989, A flash pyrolysis and petrographic study of cutinite from the Indiana paper coal: Geochimica et Cosmochimica Acta, v. 53, p. 671-683.

43. Crelling, John C., 1989, Separation and Characterization of coal macerals: accomplishments and future possibilities: in Preprints of Papers-Division of Fuel Chemistry, American Chemical Society, v. 34, no. 1, p. 249-253.

42. Rimmer, S.M., Bensley, D.F., Crelling J.C., 1989, Fluorescence spectral analysis of sporinite in the Lower Kittanning coal bed: Organic Geochemistry, v. 14, no. 3, p. 343-350.

41. Crelling, John C., 1989, Coal as a material: in Marsh, Harry, ed., Introduction to Carbon Science, Butterworths, London, 321 p.

40. Hippo. E.J., Crelling, J.C., Palmer, S.R., and Kruge, M.A., 1989, Macronmolecular structure of coal: Proceedings of Symposium on Biological Processing of Coal and Coal-derived Substances, EPRI ER- 6572, Electric Power Research Institute, Palo Alto, California, p. 1/15 to 1/35.

39. Kruge, M.A., Rimmer, S.M. and Crelling, J.C., 1989, Organic geochemical and petrographic analysis of pure macerals from the Ohio Shale: in, Lazar, D.J., ed., Proceedings of 1988 Eastern Oil Shale Symposium, Institute for Mining and Minerals Research, Lexington, Kentucky, p. 411-417.

38. Crelling, John C., 1988, Separation and characterization of coal macerals including pseudovitrinite: Ironmaking Proceedings-AIME, v. 43, p. 351-356.

37. Crelling, John C., 1988, Skorupska, Nina M., and Marsh, Harry, 1988, Reactivity of coal macerals and lithotypes: Fuel, v. 67, no. 6, p. 781-785.

36. Crelling, J.C., and Hippo, E.H., 1988, Reactivity of whole coals and selected pure maceral fractions: Proceedings of the International Conference on Carbon, American Carbon Society, p. 107-109.

35. Pasley, Mark A., and Crelling, John C., 1988, Fluorescent spectral types of selected Colorado bituminous coals: Organic Geochemistry, v. 12, no. 4, p. 333-343.

34. Hippo, Edwin J., and Crelling, John C., 1988, Desulfurization of pure coal macerals: in Preprints of Papers-Division of Fuel Chemistry, American Chemical Society, v. 33, no. 1, p. 209-216.

33. Senftle, J.T., Yordy, K.L., Barron, Lance S., and Crelling, J.C., 1988, Analysis of mixed kerogens from Upper Devonian New Albany Shale I. Evaluation of kerogen components derived from density separation: Eastern Oil Shale Symposium-1988, Kentucky Energy Cabinet Laboratory Technical Paper, TP82-88, p. 155-167.

32. Horsefield, B., Yordy, K.L. Crelling, J.C., 1988, Determining the petroleum-generating potential of coal using geochemistry and organic petrology: Organic Geochemistry, v. 13, nos. 1-3, p. 121-129.

31. Crelling, J.C., Skorupska, N.M., and Marsh, H., 1987, Reactivity of coal macerals and lithotypes: Proceedings and Program-XVIIIth Biennial conference on Carbon, American Carbon Society, p. 296-297.

30. Crelling, John C., 1987, Separation, identification, and characterization of single coal macerals: Proceedings of the 1987 International Coal Science Conference-IEA, Coal Science and Technology II- Elsevier, Amsterdam, p. 119-122.

29. Skorupska, N.M., Sanyal, A., Hesselman, G.J., Crelling, J.C. Edwards, I.A.S., and Marsh, H., 1987, The use of an entrained flow reactor to assess the reactivity of coals of high inert content: Proceedings of the 1987 International Coal Science Conference-IEA, Coal Science and Technology II-Elsevier, Amsterdam, p. 827-830.

28. Teerman, Stan C., Crelling, John C., and Glass, Garry B., 1987, Fluorescence spectral analysis of resinite macerals from coals of the Hanna Formation, Wyoming, U.S.A.: Int. Jour. of Coal Geology. v. 7, p. 314-334.

27. Hippo, E.J., Crelling, J.C., Sarvela, D.P., and Mukerjee, J., 1987, Organic sulfur distribution and desulfurization of coal maceral fractions: in Processing, Utilization of High Sulfur Coals II-ed. Yoginder P. Chugh and Rodney D. Caudle, Elsevier, Amsterdam, p. 13-22.

26. Landis, C.R., Sullivan, G.W., Pleil, M.W., Borst, W.L., and Crelling, J.C., 1987, pulsed laser fluorescence microscopy of coal macerals and dispersed organic material: Fuel, v. 66, p. 984-991.

25. Crelling, John C., Sauter, Dieter H., Ramani, Raja V., Leininger, Dieter, Bonn, Bernhard, Bertmann, Udo, Reimert, Rainer, and Gatzka, Wolfgang, 1987, Coal: Ullmann's Encyclopedia of Industrial Chemistry, v. 47, VCH, Weinheim, p. 153-196.

24. Malhotra, V.M. and Crelling J.C., 1987, Effects of particle size and air flow rates on the runaway temperature of bituminous coal at 290<T<700K: in Preprints of Papers-Division of Fuel Chemistry, American Chemical Society, v. 32, no. 4, p. 70-81.

23. Borst, W.L., Pleil, M.W., Sullivan, G.W., Crelling, J.C. and Landis, C.R., 1986, Laser-induced fluorescence microscopy of coal macerals and dispersed organic material: in Preprints of Papers-Division of Fuel Chemistry, American Chemical Society, v. 31, no. 1, p. 7-16.

22. Biswas, A., Ahmed, T., Johnson, K.W., Telschow, K.L., Crelling, J.C., Myers, J.M., 1986, Thermal characterization of coal using piezoelectric photoacoustic Microscopy: Canadian Journal of Physics. v. 64, p. 1184-1189.

21. Landis, Charles R., and Crelling John, 1985, Changes in the fluorescence properties of selected Hartshorne seam coals with rank: Proceedings of the International Conference on Coal Science IEA, p. 626-630.

20. Winans, Randall E. and Crelling, John C., 1984, Chemistry and characterization of coal macerals: overview: in Chemistry and Characterization of Coal Macerals, ed. Randall E. Winans and John C. Crelling, American Chemical Society Symposium Series 252, American Chemical Society, Washington, D.C., p. 1-20.

19. Crelling, John C. and Bensley, David F., 1984, Characterization of coal macerals by fluorescence microscopy: in Chemistry and Characterization of Coal Macerals, ed. Randall E. Winanas and John C. Crelling, American Chemical Society Symposium Series 252, American Chemical Society, Washington, D.C., p. 33-45.

18. Dutcher, Russell, R., Gunter, Mickey and Crelling, J.C., 1984, Field acquisition, processing, storing and monitoring of premium coal samples, Preprint Vol., 1984 Int. Gas Research Conf., Gas Research Inst., p. 251-257.

17. Teerman, Stan C., Crelling, John C., and Glass, Gary B., 1984, Petrology of Hanna and Ferris Formation Coals from the Hanna Coalfield, Wyoming: Dept. of Inv., No. 32, Geol. Sur. Wyoming, 23 p.

16. Johnson, Kenneth W., Crelling, John C., Biswas Abhijit, Telschow, Kenneth L., Ahmed, Tasdiq, and Myers, James M., 1984, Photoacoustic microscopy of coal macerals: Fuel, v. 64 p. 1453-1459.

15. Crelling, John C. and Bensley, David F., 1983, Characterization of coal macerals on the basis of their fluorescence spectra: in Preprints of Papers-Division of Fuel Chemistry, American Chemical Society, v. 28, no.1, p. 79-84.

14. Telschow, K.L., Johnson, K.W., Crelling, J.C., 1983, Photoacoustic microscopy of coal macerals: Proceedings of 1983 International Conference on Coal Science-International Energy Agency, p. 645-648.

13. Borst, W.L., Hamid, H.A., Crelling, J.C., 1983, Laser induced coal fluorescence microscopy: Proceedings of 1983, International Conference on Coal Science-International Energy Agency, p. 649-652.

12. Crelling, John C., 1983, Current uses of fluorescence microscopy in coal petrology: Jour. of Microscopy, v. 132, part 3, p. 251-266.

11. Crelling, John C., Stutzman, Paul E., and Robinson, Paul D., 1983, Evidence from the Herrin No. 6 coal seam or pre- and post-burial differences in the sulfur and mineral contents of peats: in Mineral Matter in Peat: Its Occurrence and Distribution: ed. Robert Raymond, Jr. and Michael Andreyko, Conference Proceedings-Los Alamos National Laboratory, LA-9907-OBES, p. 113-121.

10. Crelling, John C., 1982, Automated petrographic characterization of coal lithotypes: Int. Jour. Coal Geol., v. 1, p. 347-359.

9. Crelling, John C., Dutcher, Russell R. and Lange, Rolf V., 1982, Petrographic fluorescence properties of resinite macerals from western U.S. coals: Proceedings of the Fifth Symposium on the Geology of Rocky Mountain Coal-1982, ed. Klaus D. Gurgel, Bulletin 118, Utah Geological and Mineral Survey, p. 187-191.

8. Dutcher, Russell R., Crelling, John C. and Cascia, Malvin C., 1982, Petrography and Fluorescence properties of bituminous coals of the Spanish Peaks Region, Colorado: Proceedings of the Fifth Symposium on the Geology of Rocky Mountain Coal-1982: ed. Klaus D., Bulletin 118, Utah Geological and Mineral Survey, p. 179-186.

7. Kravits, Chris M. and Crelling, John C., 1981, Effects of overbank deposition on the quality and maceral composition of the Herrin (No. 6) coal (Pennsylvanian) of Southern Illinois: Int. Jour. Coal Geol., v. 1, p. 195-212.

6. Childs, Susan M., Crelling, John C., Dutcher, Russell R. and Goolsby, Steven M., 1980, Petrology and coking potential of selected coals from the Piceance Creek Basin, Colorado: Proceedings of the Fourth Symposium on the Geology of Rocky Mountain Coal-1980: ed. Lorna M. Carter, Resource Series 10, Colorado Geological Survey, p. 55-58.

5. Crelling, John C. and Bensley, David F., 1980, Petrology of cutinite-rich coal from the Roaring Creek Mine, Parke County, Indiana: in Middle and Late Pennsylvanian Strata on Margin of Illinois Basin, Vermillion County, Illinois and Vermillion and Parke Counties, Indiana: eds. Ralph L. Langenheim, Jr. and C. John Mann, Tenth Annual Field Conference, Great Lakes Section of Society of Economic Paleontologists and Mineralogists, p. 93-104.

4. Crelling, John C. and Dutcher, Russell R., 1980, Fluorescent macerals in Colorado coking coals: in Proceedings of the Fourth Symposium on the Geology of the Rocky Mountain Coal-1980, ed. Lorna M. Carter, Resource Series 10, Colorado Geological Survey, p. 58-61.

3. Harvey, Richard D., Crelling, John C., Dutcher, Russell R. and Schleicher, John A., 1979, Petrology and related chemistry of coals in the Illinois Basin: in Depositional and Structural history of the Pennsylvanian System in the Illinois Basin, Part 2: invited papers, eds., James E. Palmer and Russell R. Dutcher, IX Inter. Carboniferous Congress, Urbana, Illinois Geological Survey, p. 127-142.

2. Crelling, John C., Schrader, Raymond H. and Benedict, Louis G., 1979, Effects of weathered coal on coking properties and coke strength: Fuel, v. 58, no. 7, p. 542-546.

1. Crelling, J.C. and Dutcher, R.R., 1968, A petrologic study of a thermally altered coal seam from the Purgatoire River Valley of Colorado: Bull. Geol. Soc. America, v. 79, no. 10, p. 1375-1386.