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COie/IiVi~C1AL Tf=STiNG ~A~ORATOFiIES <br />- A DIVISION OF CTL-THOMPSON <br />22 LIPAN STREET DENVER, COLORADO 80223 303 / 825-3207 <br />,CTL/Thompson, Inc. <br />1701 South Federal <br />Suite D <br />Denver, Colorado 80219 <br />Attention: Bill Hoffman <br />Report Ident. No.: P-4939. <br />Report Date: play 5, 1980 <br />REPORT OF COMPRESSIVE STRENGTH TESTS. CONCRETE SPECIMENS <br />Project: Energy Fuels Coal t<4ine, Eckman Parlc, Pond A <br />Location: Upstream z 36" dia. RCP Base <br />Cast Date: 4-23-80 Time: 4:45 By CTL <br />Concrete Mix: Type II 6 sk., 3/4" agg. Batch Time: 3:37 <br />Supplier: tslof f at Ready hSix Ticket No.: C-17147 Truck No.: 53 <br />PHYSICAL PROPERTIES OF CONCRETE ' <br />Slump 4 in. Air-Content °~ Unit Weight pcf Conc. Temp. °F 58 <br />COMPRESSIVE STRENGTHS <br />• Specimen Age Diameter Strength Remarks, <br />No. Days In. Psi <br />CF'T tt 4 <br />1 7 s.oo zs6o <br />2 7 6.00 2850 <br />Cylinders Received: 4-29-80 <br />COMMERCIAL TESTING LABORATORIES <br />• By /~~~~ ~~~~" ~ ~~~°"' ~'~'t Specified Strength 3000 psi @ 28 days <br />Preston B. Fraker, P.E. <br />