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Kennecott Surprises Industry By Closing Ray, Chino Indefinitely. March 1982, Front Cover And Pp._____. Ray Has Been Consistent Producer From Underground, Openpit. March 1982, Pp. 6-8 And 10-11.EandMj. Kennecott'S New Sx Plant On Stream, In This Month In Mining. June 1980, Pp. 35 And 39.Skillings' Mining Review. M. M. Sundt Constructing Plant For Kennecott'S Ray Mines. Mar. 31, 1979, P. 6.Sohio. 1982 Annual Report. Pp. 27-28.Arizona Pay Dirt. Kennecott Reopening Ray Mine And Mill, Calling Back Workers. August 1983, Pp. 18a-19a.Asarco Incorporated. Personal Communication With Lee Osmon-Son By Company Representatives During Visit To The Ray Unit In March 1989.Epler, B. Copper Firms Get Concessionary Contracts Without Strikes. Southwestern Pay Dirt, August 1986, Pp. 12a-14a.Parsons, A. B. Ray Consolidated. Ch. In The Porphyry Coppers. The American Institute Of Mining And Metallurgical Engineers, New York, 1st Ed., 1933, Pp. 184-203.U.S. Geological Survey. Hayden Quadrangle (Topographic Map), Arizona. 7.5 Minute Series, 1964, Scale 1:24,000._____. Mesa Quadrangle (Topographic Map), Arizona. 1 Deg. X 2 Deg. Series, 1978 Rev., Scale 1:250,000._____. Sonora Quadrangle (Topographic Map), Arizona. 7.5 Minute Series, 1964, Scale 1:24,000._____. Teapot Mountain Quadrangle (Topographic Map), Arizona--Pinal Co. 7.5 Minute Series, 1964, Scale 1:24,000._____. Winkelman Quadrangle (Topographic Map), Arizona. 7.5 Minute Series, 1949, Scale 1:24,000.Walenga, K. Kennecott'S Ray Mines Division Is Having A Tough Time. Arizona Pay Dirt, June 1985, P. 3a._____. Modifying Ray Sx-Ew To Treat Sulphide Leach. South Western Pay Dirt, February 1987, Pp. 4a-6a.O'Neil, Tim, Asarco: Plant Expansions And Modernizations Continue Amidst Company Restructuring, Mining Engineering, 6/89, P.430-434. 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