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3. J. Read, T. Dodson, J. Thomas. Experimental Project—Use of Shredded Tires for Light Weight fill, Oregon Department of Transportation Post—Construction Report for Project No. TFH—71 90-501-OR-11, Salem, Oregon, 1991.
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5. K. Konkoly, Michigan Couple Turn Old Tires in to a new Home, Waste News, vol. 6, issue no. 45, 16 April 2001, p. 22.