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UL <br />• <br />C <br />UNDERWRITERS LABORATORIES INC. <br />333 PFINGSTEN WMI) • NORTHBROOK, ILLINOIS 80082 R <br />an independent, not-for-profit organization testing for public safety <br />August 6, 1986 <br />A. 0. Smith -Inland Inc. <br />Mr. John Prince t <br />2700 W. 60th Street VtA <br />Little Rock, AR 72209 G <br />Our Reference: MH8432 <br />Subject: Nonmetallic Underground Piping And Fittings <br />For Petroleum Products Only <br />Dear Mr. Prince: <br />Y <br />We confirm that your Red Thread II pipe and pipe fittin%s <br />are covered by our Listing and Follow -Up Service under our <br />category Nonmetallic Underground Piping For Petroleum Products <br />Only (QLXT). <br />Red Thread II pipe and pipe fittings that have been produced <br />under our Listing and Follow -Up Service will bear the <br />Listing Mark of Underwriters Laboratories Inc. The. Listing <br />Mark on the product is the only method provided by UL to <br />identify products which have been produced under its <br />Listing and Follow -Up Service. <br />Very truly yours, <br />E.iir'�aidlNSiCi <br />Project Engineer <br />Casualty and Chemical <br />Hazards Department <br />Revi ed by: <br />S. C. SLOWIK <br />Engineering Team Leader <br />Casualty and Chemical <br />Hazards Department <br />EJK:jw <br />Look For The (S) Listing or Classification Mark On The Product <br />L_ n111. 11— Mrl 41&11 No 154-1343 C.b1.- UL1NC NORTH6NOOK. IL T.I.a No. 201217 <br />