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SAFEGUARDING UNDERGROUND OPENINGS <br /> Task descnption Improve permanent portal closures <br /> Site Revenue Mine Pernvt Action TR-011 PenmVJob# M-2012-032 <br /> Opening Opcning Description Dimensions Closure Method Quantity Unit Unit Cost Total Cost <br /> Revenue main portal-bat 12 x 12 USER PROVIDED ITEM 1 EA $0.00 $0 00 <br /> grate <br /> Close mill portal-backfill 35 x 35 USER PROVIDED ITEM 1 EA $1,500.00 $1,500.00 <br /> Close storage portal(1)- 20 x 15 USER PROVIDED ITEM 1 EA $1,000.00 $1,000.00 <br /> backfill <br /> Close storage portal(2)- 20 x 15 USER PROVIDED ITEM 1 EA $1,000.00 $1,000.00 <br /> backfill <br /> Close storage portal(3)- 8 x 8 USER PROVIDED ITEM 1 EA $1,000 00 $1,000.00 <br /> backfill <br /> Close vent shafts(3 qty) 6 x 6 Shaft closure-precast 108 SF $8 92 $963.36 <br /> concrete panel/steel plate <br /> Job Hours: 132.00 Total Cost: $5,463.36 <br />