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Transit Mix Concrete Co. <br /> References: <br /> Bieniawski, Z.T., 1989. Engineering rock mass classifications. New York: Wiley. <br /> Hoek, E., Kaiser, P.K., and Bawden, W.F., 2000. Support of Underground Excavations in Hard <br /> Rock. Taylor& Francis <br /> Moore, D.W., Straub, A.W., Margaret E.B., Baker, M.L. and Brandt, T.R., 2002: Generalized <br /> Surficial Geologic Map of the Pueblo 10x21 Quadrangle, Colorado. <br /> Rowley, P.D, Himmelreich, J.W., Kupfer D.H. and Siddoway, C.S., 2003: Geologic Map of the <br /> Cheyenne Mountain Quadrangle, El Paso County, Colorado. <br /> Scott, G.R., Taylor R.B., Epis R.C. and Wobus R.A., 1976: Geologic Map of the Pueblo 1°x20 <br /> Quadrangle, South-Central Colorado. <br /> Hitch Rack Ranch Quarry Permit Application <br /> October 3,2017 D-25 <br />