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.. <br />Item 3. Page 2.75.220 Shaft Lining -Revised to match figures and other plan wording. <br />Also, wording has been added to clarify the initial shaft collar installation before the <br />project begins with reiseboring or slashing. <br />Item 4. Page 2.75.220 Supplemental Support (Optional) -Revised to include bolting <br />pattern in addition to bolt length. <br />Item 5. Page 3.75.370 Ventilation -General - Drillhole diameters have been revised by <br />wntrador. <br />Item 6. Page 4.75.370 Ventilation -Shaft Excavation -Wording added at request of <br />contractor for unlikely situation.that the shot will fill the 5-foot raise bore hole with <br />muck at the shot location. <br />Item 7. Page 5.77.1900 -Wording revised to match Item #3. Also, wording added to clarify <br />use of a concrete accelerator and clarify wording of lining during upreaming. <br />Item 8. Page 5. 77.1900 (A) (3) -Optional -Wording revised to match Item ffd. <br />Item 9. Figures 7 and 7A revised -Clarify lining forms and work below forms. <br />Item 10.Figures 78 and 7C added -Added to show "Work Deck" and "Raise Bore Plug" <br />during mucking operations. <br />Item 11.Figure 8 revised - Revised~to show 11 inch drillholes as mentioned in Item #5. <br />Item 12.Infornational drawings -Typical "Work Deck" and typical "Surface Hoist System". <br />If further information is required, please call me at (303)-879-3800. <br />Sincerely, <br />~~ ~~ APPROVED CMS & H ~,~ ~1P, 2 L~'95 <br />R. Lincoln Derick <br />Manager, Safety and Loss Control <br />cc. Jim Abshire Gary Buchan <br />Jim Dodd Bill Bennett <br />Alan Ferguson Rodney Pretti <br />Bud Viren <br />