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cc <br />&v <br />amed <br />Seed Masters continued to "grind and chip" stockpiled trees and brush within the designated Topsoil Storage area <br />no. 34. AMES Construction assisted Seed Masters by "pushing" the trees doser to the work area on an as needed <br />basis. <br />B) Underground Workings <br />On January 31St, USGS: Mine #08083, Opening #56, AMES working #6004, AMEC #5260 was explored. <br />One Hitachi 200 Excavator removed a 36 -inch diameter CMP pipe and grate cover approximately 20 -feet in length <br />thus exposing a major working approximately 5.5 to 7 feet in height and 7 to 8 feet in width. The working entrance <br />contained timber cribbing. Further investigation indicates the working extends in a northeast horizontal direction into <br />the hill an unknown distance. Access towards the northeast will be provided to further investigate the limits of the <br />working (drilling). <br />No other underground workings were remediated during this reporting period. <br />C) Highway 67 <br />Tree removal continues in the area of HWY 67 realignment project. An Amec field representative observed some of <br />the tree removal in the area of the embankment thru the reporting period. We anticipate this work to be ongoing in <br />preparation of the HWY 67 realignment project. <br />Monday January 28th two additional Compressive strength breaks were performed on the "Hold cylinders" in our <br />laboratory for the previously placed concrete which was placed for the west pad of the temporary concrete crossing. <br />Results are as follows: <br />Specimen: Hwy67 -1-6, Age 6 days, Load 29680 Ibs, Strength 2360 psi, 56% of design strength of 4200 psi <br />Specimen: Hwy67 -2 -6, Age 6 days, Load 43480 Ibs, Strength 3460 psi, 82% of design strength of 4200 psi <br />Based on the compressive strength testing results we believe Specimen: Hwy67 -1 -1 and Hwy67 -1 -6 had a low <br />compressive strength due to the batch in truck number 060 not meeting specification initially at the time of testing. In <br />addition the sample was taken before air admixture was mixed into the truck on site. We notified CC &V of the <br />results and it was determined that traffic can be allowed to travel over the placed concrete. <br />At Approximately 1000hrs the contractor replaced MHT#4 with MHT# 3 allowing traffic to pass over the west portion <br />of the temporary concrete crossing. The contactor then began preparing the east portion of the temporary concrete <br />crossing by cutting existing asphalt and excavating to subgrade. Final preparation of subgrade for the east portion of <br />the concrete crossing completed on January 30th and was inspected and approved for rebar placement. Rebar was <br />placed in preparation of concrete scheduled for January 31 <br />On January 31St an Amec field representative inspected the placed rebar for the east portion of the temporary <br />concrete crossing. Installation of rebar was approved per plans and specifications. At approximately 1200 hrs the <br />first concrete truck arrived to begin the placement of 98 yrds to complete the temporary concrete crossing. <br />An amec field representative sampled concrete from two trucks. Truck number 58 had a result of 3" slump and an <br />air content of 5.4 %. The second truck No. 51 had a result of 2'/." slump and an air content of 4.0 %. We obtained <br />concrete samples for compressive strength as -well. Results will be forwarded upon completion. <br />Page 2 of 6 MLE2 WE 02.02.13.doc <br />