Laserfiche WebLink
Barr Engineering Company <br />4700 West 77th Street <br />BARR Minneapolis, MN 55435 -4803 LOG OF BORING B -3 <br />Sheet 3 of 4 <br />Project: Proposed RPE Expansion <br />Location: West Elk Mine, Somerset, <br />Client: Mountain Coal Company <br />CO <br />Barr Project Number: 06/261003 <br />STANDARD PENETRATION <br />NATURAL DRY <br />TEST DATA <br />DENSITY <br />w o <br />w ( ,!Z <br />N in blows/ft 0 <br />(pcf) �k <br />MATERIAL DESCRIPTION <br />a > 0 <br />10 20 30 40 <br />105 115 125 <br />°— <br />M <br />n <br />(ASTM D2488) <br />z <br />a <br />n, z a <br />d <br />E <br />m d o <br />SHEAR STRENGTH, ksf <br />Water Content, % <br />w <br />O <br />£ aJ <br />Ov X UC A TV 3K <br />W WN WL <br />U) <br />VS A VSR O <br />1 2 3 4 <br />20 40 60 <br />60 <br />SANDSTONE Grey sandstone with minor coal dust. Minor <br />•• <br />layers of siltstone. Some clay infilling. Minor pyrite present in <br />6305 <br />small dykes. <br />100% <br />65 <br />6300 <br />100% <br />70 <br />6295 <br />': <br />100% <br />75 <br />6290 <br />89% <br />80 <br />6285 <br />96% <br />85 <br />:: <br />6280 <br />90% <br />ConTinuea 1067tPa e — — — — — -- — <br />Completion Depth: 100.0 <br />Remarks: <br />Date Boring Started: 6/18/09 <br />Date Boring Completed: 6/19/09 <br />Logged By. BSE <br />SAMPLE TYPES WATER LEVELS <br />Drilling Contractor: Haztech <br />While Drilling: <br />m Auger Cutting ,Shelby Tube <br />Drilling Method: HSA/CORE <br />Northing: 402650.2 <br />End of Drilling: <br />® <br />Eastin : 1450672.6 <br />Split Spoon Rock Core <br />hrs After Drilling: 75.28 <br />_J <br />I he stratltication lines represent appro)amate boundaries. The transition may be gradual. <br />