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~~ <br />o; . OF ~/~ <br />Gold King Mines Corporation / `'S~O~o~ C,6 ~® <br />P.O. Box 299 2%' <br />Silverton, Colorado 81433 ~P~a'~• <br />a„ <br />Telephone (970) 387-5813 Fax (970) 387-5760 °Ce_ <br />i <br />November 17, 2003 '~ <br />Mr. Wallace Erickson, Reclamation Specialist / A~~jb <br />Department of Natural Resources t,9/ <br />Division of Minerals and Geology ~~~ <br />>- .~ <br />Durango Field Office <br />701 Camino Del Rio, Room 125 ~s ~~- u <br />Durango, CO 81301 ~'of~e ~ $q~ o~ <br />RE: Mogul Mine No. 1 Level Bulkhead f 1 e~x se ~~ ~e un C( eT o~>V <br />Construction Certification Report S~ nnY s i cf e +~ <<''~" <br />M- 1977- 378 <br />Dear Mr. Erickson: ~,nsenfi aec~e~ `i~ICVSyS`~~ <br />This letter report is to provide certification that construction of the Mogul Mine No. 1 <br />Level bulkhead meets or exceeds design criteria. Submittal of a construction certification <br />report was committed to by Gold King in their contract for construction of the bulkhead <br />with Sunnyside Gold Corporation. <br />Pre-pour inspections were conducted by DMG and the design engineer, John F. Abel, Jr. <br />P.E. on August 19, 2003 (letter report attached). No deficiencies were found in either pre- <br />pourinspection. <br />Bulkhead location <br />The approximate center of the bulkhead, approximately five feet above the sill, on the air- <br />side face (side towards surface) of the bulkhead is located at station 2+41 measured from <br />the rock face at the portal at an approximate elevation of 10,400 feet. Samples of rock <br />from both ribs and the back were taken and sent to testing laboratories to verify adequate <br />rock strength for the bulkhead location. Cores were taken from the three samples tested <br />to failure. The test results are attached and considered satisfactory. One core exhibited a <br />low value failure. This failure was due to a combined shear/fracture failure and does not <br />represent the strength of the rock in place. <br />