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References
<br /> Bieniawski, Z.T., 1989, Engineering rock mass classifications: a complete manual for engineers
<br /> and geologists in mining, civil, and petroleum engineering: John Wiley & Sons, Inc., 257
<br /> p-
<br /> GROUND Engineering, LLC, 2017, "Limited Geological Evaluation, Exploratory Coring,
<br /> Colorado Rose Red Granite Quarry, Lyons, Colorado, Job No. 17-3043," 41 Inverness
<br /> Drive East, Englewood, CO 80112, August 29, 2017, 35 p.
<br /> Esterhuizen, G.S., Dolinar, D.R., Ellenberger, J.L., and Prosser, L.J., 2011, "Information Circular
<br /> 9526: Pillar and Roof Span Design Guidelines for Underground Stone Mines,"
<br /> Department of Health and Human Services, centers for Disease Control and Prevention,
<br /> National Institute for Occupational Safety and Health (NIOSH), Office of Mine Safety
<br /> and Health Research, Pittsburgh, PA, 75 p.
<br /> Punongbayan, R., Cole, J.C., Braddock, W.A., and Colton, R.B., 1989, Geologic Map of the
<br /> Pinewood Lake Quadrangle, Boulder and Larimer Counties, Colorado: Department of the
<br /> Interior, United Stated Geological Survey, GQ-1627, scale 1:24,000.
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