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AJa c.0 cuuu 10.4! <br />Fax: 970. <br />DENVER <br />anage���t�t <br />Re! Strength Test on grout plug sample. CC: <br />Henderson Mill Tailings Pond Decant Pipe <br />DENVER OUTIhr <br />Pages! 2 <br />Denver Grouting <br />A Division of Hay:tJ,ard Bake <br />To Mike Ley, Henderson Mine and Mill From Joe Hams. Denver Grouting <br />PhoeaO Date: 11/16100 <br />Ph: 303.469.1136 / Fax: 303.469.3581 <br />0 Urgent X For Review ❑ Please Comment 0 Please Reply ❑ Please Recycle <br />• strength Teat of Grout from Decant Line Abandonment: <br />On 14- Nov -21( 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 well was sk inches thick, yielding a 18-inch long, 3 <br />Inch-diameter core sample of hardened grout. <br />The sample was delivered to Commercial Testing Laboratories/ CTL Thompson 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 cal. <br />RECEIVED TIME NOV. 16. 5 :18PM PRINT TTI'F Nnv in c :saoM <br />PAGE 81/82 <br />