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.+iF :?! 60C1U lO. t <br /> <br />DEM R GROUTINr- <br />PAGE 31/82 <br />Denv er Grout ing <br />A Divisio n of Ray.v ard Bake <br />?1 <br />TO: Mike Ley, Henderson Mine and M71 <br />From Joe Harts, Denver Grouting <br />Ph: 303.469.1136 / Fax: 303.4693581 <br />Fait 970. Pages: 2 <br />Phone: Date: 11/16/00 <br />Rat Strength Test on grout plug sample, cc! <br />Henderson Mill Talllngs Pond Decant Pipe <br />0 Urgent X For Review 0 Please Comment D Please Reply ? Please ReWele <br />• Rb+etrgth Teat of Grout from Decant Una Aban"nnmmt: <br />On 14-Nov-2K personnel from Denver Grouting/ Hayward Baker core drilled the exposed concrete <br />decant pipe at the toe of the tailings dam at the decant abandonment project site. The excavation <br />provided by ACA construction exposed the top of the concrete pipe downstream and adjacent to the <br />decant riser pipe at the toe of the dam. <br />A core was cut to a depth of 24 Inches. The pipe wall was six inches thick, ylelding a 18-Inch long, 3 <br />Inch-diameter core sample of hardened grout. <br />The sample was delivered to Commercial Testing Laboratories/ CTL Tbompsfon for strength testing. <br />Test results are noted on the attached CTL report <br />Should you have any questions or require additional information, please give me a calf. <br />DENVER <br />An" di4W.rd rh? <br />V4 <br />Z <br />UJ <br />V <br />Q <br />Q <br />RECEIVED TIME NOY, 16. 5:1WM PRINT TTMF ynV to R:,CNDM