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'95-06-14 13 29 KING CORL <br />III IIIIIIIIIIIIIIII P 2 <br />sss <br />+"~Am~Fr~ anb ~ssuriA~Ps <br />CONSULTING GEOTECFIN IrnT. ENGINEERS AND MATERIAL TESTING <br />June 8, 1995 <br />National King Coal <br />1315 Main Avenue Suite #314 <br />Durango, Colorado 81301 <br />Attention: Mr. Tom Sird PN: D95098Gfi <br />Subject: Direct Shear Test Results <br />King Coal Mine High Wall <br />Hesperus, Colorado <br />Mr. Bird, <br />This letter presents the direct shear results for [he soil <br />samples which were delivered to our Laboratory on May 25, 1995 by <br />Mr. Don May, P.E.. We understand that the results will be used by <br />:~!_. __ ..~....- -___= t= ---_=~.__ _~ ass°_" =:e s_;:ne stao__=t•,- <br />... t.._ ~.._- -a==-- ac:;.= =_=a =.._-at=_::c:= mat..__a= at t..~ t1ic ~.:a:_ <br />_xca•ration at the fine Coa: Mina. <br />We ha•re pro•ided a tabulatior_ of the test results for the <br />samples tested. The angle of internal friction and cohesion may be <br />determined from the data ac the desired strain rate. We typically <br />assess angle of internal friction and cohesion at about four (4) <br />percent strain (at 080 thousands of an inch, horizontal dial <br />reading). we have provided a tabulation of the data so that Mr_ <br />Ranne}' may use the strain rate which most appropriate for his <br />analysis. <br />If you have any questions, <br />service, please contact us. <br />Respectfully submitted <br />LAMBERT AND ASSOCIATES <br />or if we may be of additional <br />David L. Trautner, P.E. <br />Durango Office Manager <br />cc: Mr. Brad Gosche' <br />._. JC: ]?BS ?. ~. iC% OOli __. ]c1o 7rc'+a <br />