skip all navigation
skip banner links
skip primary navigation

Gretchen Hoffman

Presentations

  1. Roybal, G.H., and Campbell, F.W., May 1984, Coal Geology of the Salt Lake coal field, west-central New Mexico, American Assoc. of Petroleum Geologists, National Convention, San Antonio, Texas, vol. 68, no. 4.p 523.
  2. Roybal, G.H., and Barker, J.M., October 1985, Geology and production of humate and weathered coal in New Mexico, SME-AIME Fall Meeting, Albuquerque, New Mexico - Abstract and preprint no. 85-408.
  3. Roybal, G.H., and Campbell, F.W., April 1986, Quality assessment of strippable coals in New Mexico, New Mexico Geological Society Spring Meeting, Socorro, New Mexico, Abs. with Programs; New Mexico Geology, v. 8, no. 3, p. 67.
  4. Roybal, G.H., September 1986, Characterization of New Mexico coals, Abs. American Assoc. of Petroleum Geologists, Rocky Mountain Section Meeting, Casper, Wyoming, vol. 70, no. 8, p. 1053.
  5. Roybal, G.H., and Beaumont, E.C., November 1988, Coal quality variations in the Fruitland Formation, New Mexico (abs.): Geological Society of America, national meeting, Abstract with Programs, vol. 20 no 7, p. A89.
  6. Beaumont, E.C., and Roybal, G.H., October 1989, Potential for economic coal development in the upper coal member of the Menefee Formation, Torreon wash area, Sandoval County, New Mexico: Abs., American Assoc. of Petroleum Geologists, Rocky Mountain Section Meeting, Albuquerque, New Mexico, vol. 73 no 9, p. 1147.
  7. Hoffman, G.K., April 1990, Recent investigation of the Menefee coals, Monero coal field, Rio Arriba County, New Mexico (abs.): New Mexico Geological Society Spring Meeting, Socorro, New Mexico.
  8. Hoffman, G.K., April 1992, Coal characteristics of the upper and Cleary Coal Members of the Cretaceous Menefee Formation in the La Ventana-Chacra Mesa Fields, southeastern San Juan Basin (abs.): New Mexico Geological Society Spring Meeting, Socorro, New Mexico, New Mexico Geology v. 14, p. 64-65.
  9. Hoffman, G.K., February 1993, Coal quality characteristics of the Fruitland and Menefee Formations in the San Juan Basin, northwest New Mexico: Four Corners Geological Society Meeting, Durango Colorado, Four Corners Geological Society newsletter.
  10. Hoffman, G.K., April 1993, Coal quality trends of the Fruitland and Menefee Formations in the San Juan Basin, Northwest New Mexico: (Abs) New Mexico Geological Society Spring Meeting, Socorro, New Mexico, proceedings volume, p. 30.
  11. Hoffman, G.K., Verploegh, J., Barker, J.M., February 1994, Geology and chemistry of humate deposits in the southern San Juan Basin, New Mexico: (ABS) SME Annual Meeting and Exhibit Pocket Program, Albuquerque, New Mexico, p. 104, pre-print 94-102, 10 p.
  12. Hoffman, G.K., Barker, J.M., and Austin, G.S., May 1994, Overview of humate production in North America: in proceedings, 30th Forum on the Geology of Industrial Minerals, Halifax, Nova Scotia.
  13. Hoffman, G.K., April 1995, Natural Clinker— The red dog of aggregates in the Southwest: in proceedings 31st Forum on the Geology of Industrial Minerals, El Paso, Texas.
  14. Hoffman, G.K., April 1997, Updated Demonstrated Reserve Base, San Juan Basin, NM, American Assoc. of Petroleum Geologists National Convention, Dallas, TX.
  15. Hoffman, G.K., and Jones, G.E., 1998, Fruitland Coal Availability Study, Bisti Field, San Juan Basin New Mexico— A Preliminary Report: New Mexico Geological Society Annual Spring Meeting, Socorro, NM, New Mexico Geology vol. 20, no. 2, p. 50.
  16. Hoffman, G.K., 1999, New Mexico’s Coal Industry: New Mexico Geological Society Annual Spring Meeting, Socorro, NM, New Mexico Geology vol. 21, no. 2, p. 31.
  17. Hoffman, G.K., and Jones, G. E., February 2000, Coal Availability Studies, Fruitland and Menefee Formations, San Juan Basin, New Mexico: (Abs) SME Annual Meeting and Exhibit Pocket Program, Salt Lake City, Utah, p. 82, pre-print 00-79, 12 p.
  18. Hoffman, G.K., May 2000, Fly Ash Utilization in the Western United State: (Abs) 36th Forum on the Geology of Industrial Minerals and 11th Extractive Industry Geology Conference, Bath, England, Programme and Abstracts.
  19. Hoffman, G.K., September 2000, Uses of Fly Ash from New Mexico Coals: American Assoc. of Petroleum Geologists Rocky Mountain Section meeting, Albuquerque, NM Abstracts in American Assoc. of Petroleum Geologists Bulletin vol. 84, no. 8., p. 1240.
  20. Hoffman, G.K., April, 2002, Fly Ash Utilization in the Western United States,: Coal Combustion By-products and Western coal Mines: A Technical Interactive Forum, Denver, Colorado, Abstracts.
  21. Krueger, C. B.; McLemore, V. T.; Hoffman, G. K.; Jones, G. R.; Wilks, M., 2002, Mining district databases of New Mexico [abs.], in: Geological Society America, Abstracts with Programs, v. 34, no. 6, 448 p.
  22. Krueger, Christian B.; McLemore, Virginia T.; Hoffman, Gretchen K.; Jones, Glen R.; Wilks, Maureen, 2002, Mining districts databases of New Mexico, in: Geological Society America, Abstracts with Programs, v. 34, 448 p.
  23. McLemore, V. T., Raugust, J. S., Hoffman, G. K , Wilks, M., Johnson, P., Krueger, C. B., and Jones, G. E., 2003, Use of the New Mexico Mines Database in reclamation studies: 20th Annual National Meetings of ASMR and the 9th Billings Land Reclamation Symposium, Working Together for Innovative Reclamation
  24. McLemore, V. T., Krueger, C. B., Johnson, P., Raugust, J. S., Jones, G. E., Hoffman, G. K. and Wilks, M., 2003, New Mexico Mines Database (abstr.): Society of Mining, Exploration, and Metallurgy, SME program, p. 58.
  25. Hoffman, G.K., and Brister, B.S., November, 2004, History Of Development Of Coal And Coalbed Methane Resources Of The Raton Coalfield In New Mexico: Geological Society of America Annual Mtg.
  26. Brister, B.S., and Hoffman, G.K., April, 2005 New Mexico’s Raton Basin Coalbed Methane Play: American Association of Petroleum Geologists, Southwest Section Meeting, Fredericksburg, Texas.
  27. Hoffman, G.K., March 2006, Construction Uses: Pozzolans and Other Supplementary Cementitious Materials (SCMs), SME Annual Meeting, St. Louis Missouri.
  28. Johnson, Peggy S., Timmons, Stacy, Whiteis, Jennifer, Gillard, Lewis, Hoffman, Gretchen, 2006, Preliminary Results Of Geochemical Characterization Of Groundwater In McKinney, ed., The Southern Española Basin, New Mexico: In Geologic and hydrogeologic Framework of the Espanola Basin – Proceedings of the 5th Annual Espanola Basin Workshop, Santa Fe, New Mexico, March 7-8, 2006, U.S. Geological Survey Open-file report 2006-1134.
  29. Hoffman, G., May 2007, Environmental and economic factors influencing use of mineral admixtures in concrete over the last 25 years: Proceedings of the 43rd Forum on the Geology of Industrial Minerals 2007.
  30. Harben, P., Austin, G., Hoffman, G., McLemore, V., Caledon, M., and Barker, J., May 2007, Industrial minerals, a staple in the economy of the Land of Enchantment: Proceedings of the 43rd Forum on the Geology of Industrial Minerals 2007.
  31. Hoffman, G.K., March 2009, Factors Influencing use of Mineral Admixtures for the past decade in the Western US, SME Annual Meeting, Denver, CO, preprint 09-081.
  32. Hoffman, Gretchen K.; Wilks, Maureen, 2013, Acquiring and georeferencing coal mine maps: San Juan Basin, NM, in: 2013 New Mexico Geological Society,Spring Meeting, April 12, 2013, Macey Center, New Mexico Tech, Socorro, NM, New Mexico Geology, v. 35, no. 2, pp. 51.