Langston & Associates

Geological and Mining Engineers

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PUBLICATIONS:

-Langston, R.B. Volcanic Stratigraphy Of Part Of The Upper Cretaceous Livingston Formation Near Nye, Montana": Northwest Geology, V. 14, p. 11-15, 1985.


-Primo, W.R., Heltz, R.T., Zientek, M.L., Langston, R.B., 1990, U-Pb and Sm-Nd ages for the Stillwater Complex and its associated sills and dikes, Beartooth Mountains, Montana, Geology, V. 18 p. 1065-1068, November 1987.


-Dahy, J. P., Doherty, J.E., Evans-Holmgren, J., Geraghty, E.P. Koski, M.S., Langston, R.B., Rose, J.C., Vian, R.W., Wolfgram, D., Geologic settings of PGE mineralization in the Stillwater Mine, Montana. In Abstracts, Pacific Northwest Metals and Minerals Conference, Spokane, Washington, May 1989.


-Rose, J.C., Dahy, J. P. Doherty, J.E., Evans-Holmgren, J., Geraghty, E.P. Koski, M.S., Langston, R.B., Vian, R.W., Wolfgram, D., Stratigraphic relations near the base of Troctolite-Anorthosite Zone I, Stillwater Mine, Montana. In Abstracts, Pacific Northwest Metals and Minerals Conference, Spokane, Washington, May, 1989.


-Vian, R.W., Dahy, J. P., Doherty, J.E., Geraghty, E.P. Koski, M.S., Langston, R.B., Rose, J.C., Distribution of Platinum-Palladium Mineralized Rocks in the Stillwater Mine, Montana, Abstract in Northwest Geology, V. 20/21 p. 64, 1992.


-Langston, R.B., Thickness contour studies of PGE mineralization and the relationship between ore zone types in the J-M Reef, Stillwater Mine, Nye, Montana.  Poster session, Geological Society of America, 47th Annual Rocky Mountain Section, V. 27, No. 4 p 33, Montana State University, Bozeman, Montana. May 18-19, 1995.


-Dahy, J.P., Corson, S.R., Geraghty, E.P., Koski, M.S., Langston, R.B., Leroy, L.W., Stratigraphic relationship of the J-M Reef package within the Troctolite-Anorthosite Zone I, Stillwater Complex, Stillwater Mine, Montana.  Poster session, Geological Society of America, 47th Annual Rocky Mountain Section, V. 27, No. 4 p 34, Montana State University, Bozeman, Montana. May 18-19, 1995.


-Langston, R.B., 1997, Stratigraphic Investigations in the Lower Banded Series and J-M Reef, Stillwater Complex, Montana: Implications for Ore Genesis and Deposition.  In Abstracts, Pacific Northwest Metals and Minerals Conference, Spokane, Washington, April 1997.


-Langston, R.B., 1999, Modeling of Geotechnical Parameters for Mine Planning Purposes at the Stillwater PT-PD Mine, Nye, Montana. GSA Cordilleran Section Abstracts with Programs.


-Johnson, JC, Brady, T, Larson, M, Langston, R, & Kirsten, H. 1999. Use of strain-gauged rock bolts to measure rock mass strain during drift development. In Amadei et al (ed.), Rock Mechanics for Industry, Proc. 37th US Rock Mechanics Symp., Vail, 6-9 June 1999: 497-502. Rotterdam: Balkema.


-MacLaughlin, M.M., Johnson, J.G., and Langston, R.B., 2000, Discrete element analysis of failure modes in a stope at the Stillwater Mine, Proceedings of the 35th Symposium on Engineering geology and Geotechnical Engineering, Pocatello, Idaho, pp. 275-280.


-MacLaughlin, M.M., and Langston, R.B., 2001, Discrete Element Analysis of a Mine Stope in Blocky Rock: A Comparison of DDA and UDEC Results. In N. Bicanic (ed) ICADD-4, Fourth International Conference on Analysis of Discontinuous Deformation. 2001, Glascow, Scotland.


-Langston, R.B., and Kirsten, H.A.D. 2001. Probabilistic Assessment of Sub-level Hangingwall Stability at the Stillwater Mine, Nye, Montana. In D. Elsworth, J. Tinucci, and K. Heasley. (eds), Proceedings, 38th U.S. Rock Mechanics Symposium, DC Rocks 2001, Washington, D.C.

 

-Maclaughlin, M.M., Langston, R.B., and Brady, T.M., 2001. Numerical geomechancial modeling for Stillwater Mine, Nye, Montana, In D. Elsworth, J. Tinucci, and K. Heasley. (eds), Proceedings, 38th U.S. Rock Mechanics Symposium, DC Rocks 2001, Washington, D.C.


-Langston, R.B., and Kirsten, H.A.D., Walter, Q.W., and Smith E.L. 2002. Construction and Utilization of a Field Data Sheet for Consideration of Rock Engineering Problems in Underground Hard Rock Mining. In R. Hammah, W. Bawden, J. Curran, and M. Telsnicki (eds), Proceedings, 5th North American Rock Mechanics Symposium and the 17th Tunneling Association of Canada Conference, 2002, Toronto, Ontario.


-Langston, R.B., 2003. Probabilistic Assessment of Sub-level Hangingwall Stability at the Stillwater Palladium – Platinum Mine, Nye, Montana. M.S. Thesis, Montana Tech of the University of Montana.


-Johnson, J.G., Brady, T.M., MacLaughlin, M.M., Langston, R.B., and Kirsten, H.A.D. 2003. In Situ Stress Measurements at the Stillwater Mine, Nye, Montana. In P. Culligan, H. Einstein and A. Whittle, (eds), Proceedings, 39th U.S. Rock Mechanics Symposium, Cambridge, Mass.


-Jordan, J., Langston, R., Kirsten, H., Marjerison, J.A.., Jacobs, C., Stahlbush, F., Underhand cut-and-fill mining at the Stillwater Mine. Technical Program 2003 SME Annual Meeting and Exhibit, February, 2003 Denver Colorado.


-Langston, R.B., and Kirsten, H.A.D., Marjeison, J.A.. 2004. Classification of the Degree of Rock Fracturing and Estimation of Rock Stress at the Stillwater Palladium – Platinum Mine, Nye, Montana USA. In R. Hammah, W. Bawden, J. Curran, and M. Telsnicki (eds), Proceedings, 6th North American Rock Mechanics Symposium, Houston, Texas


-Langston, R.B., and Kirsten, H.A.D., Niemi, E.A., Marjeison, J.A. 2006. Extraction of a Remnant Sill Pillar Under Challenging Ground Conditions at the Stillwater Mine, Nye, MT., Proceedings, 41st U.S. Rock Mechanics Symposium, Golden, CO.


-Smith, E.L., Langston, R.B., and O’Reilly, M.O. 2006. Increasing Service Life of Muck Passes at the East Boulder Mine. Proceedings, 41st U.S. Rock Mechanics Symposium, Golden, CO.


-Langston, R.B., Kirsten, H. A. D., Howell, G. C., Marjerison, J. A. 2007. Classification Based Probabilistic Design of Ground Support. International Workshop on Rock Mass Classification in Mining. 1st Canada – U.S. Rock Mechanics Symposium, Vancouver, B.C.