Calculation of West Elk Mine Excess Bond
<br />Prepared: 09/30/11
<br />T. Kaldenbach
<br />Figures shown on DRMS decision forms
<br />Calculation of actual liability
<br />Prior liability Change in Revised liability
<br />liability
<br />Current A B A + B
<br />Octicilluv
<br />forward as
<br />Future
<br />$14,049,738
<br />increments
<br />Change in
<br />$0
<br />not yet due,
<br />future
<br />Future increments
<br />Bond held
<br />prior to
<br />increments
<br />not yet due, after
<br />current
<br />not yet due
<br />current revision
<br />revision
<br />$1,465,372
<br />$1,465,372
<br />D E
<br />F
<br />E +F
<br />(A► +B) +F) D - (A + B) - (E + F)
<br />of 10110108:
<br />$14,049,738
<br />$14,500,000
<br />$0
<br />PR -14
<br />$14,049,738
<br />$1,465,372
<br />$15,515,110
<br />$14,500,000
<br />$0
<br />$1,465,372
<br />$1,465,372
<br />$14,049,738
<br />$450,262
<br />TR -114
<br />$15,515,110
<br />$5,564
<br />$15,520,674
<br />$14,500,000
<br />$1,465,372
<br />$0
<br />$1,465,372
<br />$14,055,302
<br />$444,698
<br />MR -350
<br />$15,520,674
<br />$0
<br />$15,520,674
<br />$14,500,000
<br />$1,465,372
<br />$0
<br />$1,465,372
<br />$14,055,302
<br />$444,698
<br />MR -351
<br />$15,520,674
<br />$0
<br />$15,520,674
<br />$14,500,000
<br />$1,465,372
<br />$0
<br />$1,465,372
<br />$14,055,302
<br />$444,698
<br />MR -352
<br />$15,520,674
<br />$14,725
<br />$15,535,399
<br />$14,500,000
<br />$1,465,372
<br />- $18,781
<br />$1,446,591
<br />$14,088,808
<br />$411,192
<br />MR -353
<br />$15,535,399
<br />$30,870
<br />$15,566,269
<br />$14,500,000
<br />$1,446,591
<br />$0
<br />$1,446,591
<br />$14,119,678
<br />$380,322
<br />TR -116
<br />$15,566,269
<br />- $132,805
<br />$15,433,464
<br />$14,500,000
<br />$1,446,591
<br />$0
<br />$1,446,591
<br />$13,986,873
<br />$513,127
<br />MR -354
<br />$15,433,464
<br />$8,820
<br />$15,442,284
<br />$14,500,000
<br />$1,446,591
<br />$0
<br />$1,446,591
<br />$13,995,693
<br />$504,307
<br />TR -117
<br />$15,442,284
<br />- $1,599,429
<br />$13,842,855
<br />$14,500,000
<br />$1,446,591
<br />$0
<br />$1,446,591
<br />$12,396,264
<br />$2,103,736
<br />MR -355
<br />$13,842,855
<br />$4,173
<br />$13,847,028
<br />$14,500,000
<br />$1,446,591
<br />$0
<br />$1,446,591
<br />$12,400,437
<br />$2,099,563
<br />MR -356
<br />$13,847,028
<br />$239
<br />$13,847,267
<br />$14,500,000
<br />$1,446,591
<br />$0
<br />$1,446,591
<br />$12,400,676
<br />$2,099,324
<br />TR -118
<br />$13,847,267
<br />$441,251
<br />$14,288,518
<br />$14,500,000
<br />$1,446,591
<br />$0
<br />$1,446,591
<br />$12,841,927
<br />$1,658,073
<br />TR -119
<br />$14,288,518
<br />$38,401
<br />$14,326,919
<br />$14,500,000
<br />$1,446,591
<br />$0
<br />$1,446,591
<br />$12,880,328
<br />$1,619,672
<br />MR -357
<br />$14,326,919
<br />$208,078
<br />$14,534,997
<br />$14,500,000
<br />$1,446,591
<br />$0
<br />$1,446,591
<br />$13,088,406
<br />$1,411,594
<br />MR -358
<br />$14,534,997
<br />$12,839
<br />$14,547,836
<br />$14,500,000
<br />$1,446,591
<br />$0
<br />$1,446,591
<br />$13,101,245
<br />$1,398,755
<br />MR -361
<br />$14,547,836
<br />$30,095
<br />$14,577,931
<br />$14,500,000
<br />$1,446,591
<br />- $30,095
<br />$1,416,496
<br />$13,161,435
<br />$1,338,565
<br />MR -362
<br />$14,577,931
<br />$9,454
<br />$14,587,385
<br />$14,500,000
<br />$1,416,496
<br />$0
<br />$1,416,496
<br />$13,170,889
<br />$1,329,111
<br />MR -363
<br />$14,587,385
<br />$0
<br />$14,587,385
<br />$14,500,000
<br />$1,416,496
<br />$0
<br />$1,416,496
<br />$13,170,889
<br />$1,329,111
<br />TR -120
<br />$14,587,385
<br />$594,978
<br />$15,182,363
<br />$14,500,000
<br />$1,416,496
<br />$0
<br />$1,416,496
<br />$13,765,867
<br />$734,133
<br />MR -365
<br />$15,182,363
<br />$0
<br />$15,182,363
<br />$14,500,000
<br />$1,416,496
<br />$0
<br />$1,416,496
<br />$13,765,867
<br />$734,133
<br />TR -121
<br />$15,182,363
<br />$63,279
<br />$15,245,642
<br />$14,500,000
<br />$1,416,496
<br />- $348,484
<br />$1,068,012
<br />$14,177,630
<br />$322,370
<br />MR -370
<br />$15,245,642
<br />$1,178
<br />$15,246,820
<br />$14,500,000
<br />$1,068,012
<br />$0
<br />$1,068,012
<br />$14,178,808
<br />$321,192
<br />MR -371
<br />$15,246,820
<br />$1,891
<br />$15,248,711
<br />$14,500,000
<br />$1,068,012
<br />$0
<br />$1,068,012
<br />$14,180,699
<br />$319,301
<br />MR -372
<br />$15,248,711
<br />$0
<br />$15,248,711
<br />$14,500,000
<br />$1,068,012
<br />$0
<br />$1,068,012
<br />$14,180,699
<br />$319,301
<br />MR -369
<br />$15,248,711
<br />$0
<br />$15,248,711
<br />$14,500,000
<br />$1,068,012
<br />$0
<br />$1,068,012
<br />$14,180,699
<br />$319,301
<br />TR -123
<br />$15,248,711
<br />$4,307
<br />$15,253,018
<br />$14,500,000
<br />$1,068,012
<br />- $175,778
<br />$892,234
<br />$14,360,784
<br />$139,216
<br />MR -374
<br />$15,253,018
<br />$32,686
<br />$15,285,704
<br />$15,000,000
<br />$892,234
<br />$0
<br />$892,234
<br />$14,393,470
<br />$606,530
<br />MR -375
<br />$15,285,704
<br />$2,625
<br />$15,288,328
<br />$15,000,000
<br />$892,234
<br />$0
<br />$892,234
<br />$14,396,094
<br />$603,906
<br />MR -376
<br />$15,288,328
<br />$1,058
<br />$15,289,386
<br />$15,000,000
<br />$892,234
<br />$0
<br />$892,234
<br />$14,397,152
<br />$602,848
<br />MR -377
<br />$15,289,386
<br />$6,321
<br />$15,295,707
<br />$15,000,000
<br />$892,234
<br />$0
<br />$892,234
<br />$14,403,473
<br />$596,527
<br />MR -378
<br />$15,295,707
<br />$4,259
<br />$15,299,966
<br />$15,000,000
<br />$892,234
<br />$0
<br />$892,234
<br />$14,407,732
<br />$592,268
<br />MR -379
<br />$15,299,966
<br />$675
<br />$15,300,641
<br />$15,000,000
<br />$892,234
<br />$0
<br />$892,234
<br />$14,408,407
<br />$591,593
<br />TR -126
<br />$15,300,641
<br />$2,199
<br />$15,302,840
<br />$15,000,000
<br />$892,234
<br />$0
<br />$892,234
<br />$14,410,606
<br />$589,394
<br />TR -125
<br />$15,302,840
<br />$0
<br />$15,302,840
<br />$15,000,000
<br />$892,234
<br />$0
<br />$892,234
<br />$14,410,606
<br />$589,394
<br />MR -380
<br />$15,302,840
<br />$561
<br />$15,303,401
<br />$15,000,000
<br />$892,234
<br />$0
<br />$892,234
<br />$14,411,167
<br />$588,833
<br />TR -127
<br />$15,303,401
<br />$0
<br />$15,303,401
<br />$15,000,000
<br />$892,234
<br />$0
<br />$892,234
<br />$14,411,167
<br />$588,833
<br />MR -381
<br />$15,303,401
<br />$1,111
<br />$15,304,512
<br />$15,000,000
<br />$892,234
<br />$0
<br />$892,234
<br />$14,412,278
<br />$587,722
<br />RN -06
<br />$14,601,301
<br />$0
<br />$14,601,301
<br />$15,000,000
<br />$892,234
<br />$0
<br />$892,234
<br />$13,709,067
<br />$1,290,933
<br />TR -129
<br />$14,601,301
<br />$0
<br />$14,601,301
<br />$15,000,000
<br />$892,234
<br />- $295,615
<br />$596,619
<br />$14,004,682
<br />$995,318
<br />Actual liability Excess bond after
<br />(upon approval of approval of current
<br />current revision) revision
<br />
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