Oil Shale: A Solution to the Liquid Fuel Dilemma, ACS Symposium Series 1032, American Chemical Society 2010Authors: Alan K. Burnham and Roger L. Day (American Shale Oil, LLC), Michael P. Hardy (AAI), and P. Henrik Wallman (American Shale Oil, LLC) American Shale Oil LLC (AMSO) is one of three companies holding an Oil Shale RD&D [...]
Oil Shale
18th U.S. Oil Shale Symposium, Grand Junction, Colorado, April 1985 Author: T. W. Gulliver (AAI) Dissolution of salts in the Piceance Creek Basin oil shales has lead to considerable collapse. Fracture systems affecting dissolution at depth show visible lineaments. Remote sensing, hand in hand with drill hole data, allows interpretation of solution collapse and modeling [...]
19th U.S. Symposium on Rock Mechanics, Reno, Nevada, 1–3 May 1978 Authors: M. P. Hardy and J. F. T. Agapito (AAI), and J. Page (Atlantic Richfield Company) The results of overcore stress determinations and stratascope observations in the roof of the Colony Pilot Mine are presented and compared with results from numerical calculations. These results [...]
Society of Mining Engineers of AIME, Dallas, Texas, 23–28 February 1974, Preprint No. 74-AIME-26 Author: J. F. T. Agapito (Atlantic Richfield Company) The mining engineer must be able to predict the structural behavior of the rock around underground openings so that he can answer questions relating to safety and economics. With the present status of [...]
Mining Engineering, Rock in the Box, November 1990 Author: Editorial by C. E. Brechtel (AAI) The current “Crisis in the Gulf” has brought the need for a long-term U.S. energy policy back onto the national agenda. Publications of the oil industry now abound with calls for the development of an effective policy that avoids the [...]
Rock Mechanics Productivity and Protection, 25th U.S. Symposium on Rock Mechanics, Evanston, Illinois, March 1984 Authors: S. J. Mitchell and J. F. T. Agapito (AAI), and L. A. Weakly (Exxon Company, U.S.A.) An analysis of bolting reinforcement of several large [approximately 18-m (60-ft) cube] pillars was performed. The many overcoring stress profiles in pillars at [...]
Design Methods in Rock Mechanics, Proceedings of the 16th U.S. Symposium on Rock Mechanics, University of Minnesota, Minneapolis, September 1975 Authors: M. P. Hardy and J. F. T. Agapito (Golder Associates, Inc.) The Colony pilot mine provided valuable pillar strengths that should form the basis of any subsequent mine designs. As no commercial oil shale [...]
U.S. Bureau of Mines, RI-9006, 1985 Authors: E. D. Thimons (USBM), and C. E. Brechtel, M. E. Adams, and J. F. T. Agapito (AAI) The performance of two large-capacity ventilation systems was compared through tests conducted in a large dead-end heading at a pilot oil shale mine in Colorado. Sulfur hexafluoride tracer gas was used [...]
18th Oil Shale Symposium, Grand Junction, Colorado, April 1985 Authors: H. A. Perry (Exxon Company, U.S.A.), and C. E. Brechtel and M. P. Hardy (AAI) Fourteen close-spaced core holes were drilled through the Mahogany mine zone on the Colony property to evaluate lateral oil shale grade variability. Lateral grade variation was evaluated using horizontal variograms, [...]
3rd Mine Ventilation Symposium, Pennsylvania State University, University Park, Pennsylvania, October 1987 Authors: M. E. Adam (Tenn-Luttrell, Inc.), C. E. Brechtel and J. F. T. Agapito (AAI), and E. D. Thimons (USBM) Full-scale stopping and simulated overcast structures were constructed in large opening (30-ft high by 55-ft wide) room-and-pillar excavations in an oil shale mine. [...]
Rock Mechanics, 7:101–120, Springer-Verlag, 1975 Authors: B. T. Brady, V. E. Hooker and J. F. T. Agapito Preliminary results are reported of a cooperative research agreement between the U.S. Bureau of Mines and the Colony Development Operation of the Atlantic Richfield Corporation. The overall objective of this program is to correlate laboratory and in situ [...]
15th Oil Shale Symposium, Colorado School of Mines, Golden, Colorado, 28–30 April 1982 Authors: J. F. T. Agapito and M. P. Hardy (AAI) Pillar design in oil shale by the induced horizontal stress method is based on in situ stress determinations of pillars before and during failure, on computer analysis incorporating site-specific rock properties, and [...]
International Journal of Mining Engineering, 2:93–105, 1984 Authors: J. F. T. Agapito, H. N. Maleki, and J. R. Aggson (AAI), and L. A. Weakly (Exxon Company) The load-carrying capacity of oil shale pillars excavated by conventional blasting can be increased significantly by presplit blasting and mechanical mining. Comparisons of in situ vertical stresses and fractures [...]
International Symposium on Application of Rock Characterization Techniques in Mine Design, SME-AIME Annual Meeting, New Orleans, March 1986 Authors: C. E. Brechtel and M. P. Hardy (AAI), T. W. Gulliver (Consulting Geologist), and H. A. Perry (Exxon Company) Rock structural and mechanical properties data developed in geotechnical investigations at the Colony shale oil property are [...]
International Rock Mechanics Symposium, Montreaux, 1979 Authors: J. F. T. Agapito (Consultant), M. P. Hardy (University of Minnesota), and J. Page (Atlantic Richfield) Tabular ore deposits form a major portion of the reserves of the coal, potash, trona, and limestone that are mined by underground methods, while some copper and lead-zinc deposits are also tabular [...]
International Journal of Mining Engineering, 3:195–213, 1985 Authors: J. F. T. Agapito, and S. J. Mitchell (AAI), and L. A. Weakly (Exxon Company) Stability in Exxon’s Colony Pilot Mine in the Piceance Creek Basin, Colorado, has been monitored by periodic pillar stress determinations and roof-to-floor convergence measurements since 1971. Pillar failure has caused marginal stability [...]
SME Annual Meeting and Exhibit, Las Vegas, Nevada, February 1989 Authors: L. A. Weakly (Exxon Company), C. E. Brechtel (AAI), N. Paas (Mine Craft, Inc.), and R. A. Skrabak (MSHA) The requirement for large diesel equipment to be certified for operation in potential gassy mine conditions in western oil shale mines motivated a design engineering [...]
Bureau of Mines, Report of Investigations 9219 Authors: C. E. Brechtel (AAI) and E. D. Thimons (USBM) Cooperative research efforts by the Bureau of Mines and Agapito & Associates, Inc., Grand Junction, CO, used a one-dimensional, finite-element computer model to simulate turbulent mass transfer in face ventilation of oil shale mines. The objective was to [...]
2nd U.S. Mine Ventilation Symposium, Reno, Nevada, 23–25 September 1985 Authors: C. E. Brechtel, M. E. Adam, and J. F. T. Agapito (AAI), and E. D. Thimons (USBM) The performance of two large-capacity face ventilation systems was measured using sulfur hexaflouride tracer gas tests in a large dead-end heading at the Colony shale oil mine. [...]
Behavior of Rock in Engineering Applications, ASCE Convention Symposium, Denver, Colorado, April 1985 Authors: M. P. Hardy, H. N. Maleki, and S. J. Mitchell (AAI) Displacement discontinuity methods for stress analysis, pioneered by Starfield and Crouch, have found wide acceptance in the application of stability assessment and design in underground mining. The presentation describes case [...]
17th U.S. Symposium on Rock Mechanics, Snowbird, Utah, 1976 Authors: J. F. T. Agapito (AAI) and J. B. Page This paper describes part of a geotechnical study based on stress determinations and convergence measurements conducted to assess the long-term stability of an experimental room-and-pillar oil shale mine. A rock mechanics program was initiated in 1971 [...]
