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<br />' immediately above the fan portal. Here, the upper limit of <br /> sliding appeared to track the existing access road utilized in <br />' mine construction. However, it is debatable whether the sliding <br /> in that area was caused by the presence of the access road or <br /> merely influenced by its presence. <br />t 3.0 INITIAL RESP~iSE <br />' Concerning response to the landsliding, once the existing fan had <br />been destroyed, then mine ventilation was no longer possible and <br />' the mine was evacuated. Mr. Craig Springer of Bear Coal Company <br />' contacted our office to inform us of the slides and was advised <br />to take no action regarding clean-up or transport of debris until <br />' 1) the rains had ceased (it was still raining at the time) and 2) <br />personnel of Rocky Mountain Geotechnical could complete an <br />' inspection to determine that clean-up operations could begin <br />safely without inducing further slides or causing further damage. <br />Rains subsequently began to subside late Thursday, April 10, <br />' 1986. Ken Myers of Rocky Mountain Geotechnical, Inc. was present <br />on-site by late morning, Friday, April 11, 1986. At that time, <br />' the landslide areas were .inspected, along with the outermost <br />' portion of the entry and fan portals where the interface between <br />the ancient landslide debris and bedrock surface could be <br />' examined behind the existing tunnel lining. Sliding was found to <br />fall into two categories: <br />' 1. Flow slides ranging from small earth flows to mud flows <br />and/or debris flows; the largest being the existing feature <br />lying between the fan portal and the entry and belt <br />' 3 <br />