Laserfiche WebLink
R 2 INCORPORATED <br />ENVIRONMENTAL AND ENGINEERING SERVICES <br />STRATEGICALLY POSITIONED- TECHNICALLY PREPARED <br />MAY DAY IDAHO MINE COMPLEX <br />WILDCAT MINING CORPORATION <br />ORIGINAL 112d PERMIT <br />Geotechnical Stability Exhibit <br />Exhibit 6.5 <br />Geotechnical laboratory and stability analyses have been conducted by: <br />GEORGE M.L. ROBINSON,P.G. <br />J. ERICH RALIBER,P.E. <br />• Sakura Engineering (Farmington, New Mexico), Mr. Paul Martin, Colorado Registered <br />Professional Engineer # 27207 <br />o New Access Road; <br />o La Plata River Bridge upgrade (25 tons); and <br />o May Day No. 1 portal steel set stability analyses. <br />• R Squared, Inc. (Denver, Colorado) - Mr. John Erich Rauber, Colorado Registered <br />Professional Engineer #26647 <br />o New Access Road; <br />o May Day No. 1 portal collapse and head scarp; <br />o Augmentation pond foundation; and <br />o Bench stability including rock storage areas at May Day No. 1, May Day No. 2, <br />Lamb, and the augmentation pond rock storage adjacent to the Idaho historic mill <br />building. <br />• William C. Birza, P.E. Colorado Registered Professional Engineer, 19902 <br />o Original Bridge Calculations (15 tons). <br />• Terracon, Inc. - Farmington, New Mexico <br />o Laboratory Services. <br />Geotechnical hazards evaluated include the following: <br />• May Day No. 1 Portal collapse and head scarp stabilization; <br />• May Day No. 1 and Chief Portal steel /timber set stability; <br />• New Access Road, road stability including cut slope; <br />• Embankments; <br />• Highwalls; <br />Wildcat Mining Corporation <br />May Day Idaho Mine Complex — 112d Permit Application <br />5555 DTC Parkway Suite A -4000, Greenwood Village, Colorado 80111 <br />Phone: (303) 832 -7664 I Fax: (303) 832 -7469 <br />Revised: August 2011 <br />