Laserfiche WebLink
<br />ti <br />Page 2. <br />The ventilation during the development to the East Portal shaft will be by two <br />runs of exhaust metal tubing (one 36 inch and one 30 inch) up the belt entry. <br />Intake air will come down the rope slope, course to the active face and exhaust <br />through the tubing. Once the connection between the slopes and the ventilation <br />shaft is established, fresh air will enter the mine through the rope slope and <br />exhaust through the ventilation fan currently located at the East portal. The belt <br />will be managed as a neutral airway. <br />The power demand increases with the installation of this temporary equipment. <br />A temporary substation will be placed 100 ft west of the current substation. The <br />temporary substation consists of two mobile trailers fenced with 8ft chain link <br />fence. Once the existing station has been upgraded the temporary substation <br />will be removed. <br />No increase in bond is anticipated with this minor revision. The ventilation fans <br />and the 48 inch drive require concrete foundations at 21.3 and 37 CY of cement, <br />respectively. The direct cost to remove the foundations is estimated at $92/CY <br />for a total of $5,370. The equipment is either skid mounted or on tires which <br />facilitates the removal for reclamation. The direct cost to remove the equipment <br />is estimated at $4,000. The bonding as described in RN-05 dated 2-16-09 <br />includes items in the structural demolition task-095 that have already been <br />removed that would cover this cost. Specifically, the loadout belt building at the <br />East Portal has been removed yet $11,473.92 of direct cost for demolition and <br />removal is currently included in the bond. <br />Sincerely, <br />Ol ?l <br />Ron Thompson, <br />Mine Manager <br />Enclosures: Map 11 - East Portal Site Plan <br />Revised Permit page 2.05-5