Computation
      of Ratio of Earnings to Fixed Charges
            Exhibit
      7.1





(CAD in millions)
                                    
                                    Predecessor
                                    
                                    
                                    
                                    SuccessorYear Ended
                                    
                                    
                                    Ten Months
                                      Ended
                                    
                                    
                                    
                                    Two Months
                                      Ended
                                    
                                    
                                    Year Ended
                                    
                                    
                                    Year Ended
                                    
                                    
                                    Year EndedDecember 31
                                    
                                    
                                    October 30
                                    
                                    
                                    
                                    December 31
                                    
                                    
                                    December 31
                                    
                                    
                                    December 31
                                    
                                    
                                    December 312006
                                    
                                    
                                    2007
                                    
                                    
                                    
                                    2007
                                    
                                    
                                    2008
                                    
                                    
                                    2009
                                    
                                    
                                    2010Earnings:Income
      (loss) from continuing operations before income taxes, equity in net
      losses of affiliates and minority interests
                                    
                                    
                                    125.7
                                    
                                    
                                    
                                    138.8
                                    
                                    
                                    
                                    
                                    (66.2
                                    )
                                    
                                    
                                    (996.1
                                    )
                                    
                                    
                                    435.7
                                    
                                    
                                    
                                    272.2Pre-tax
      dividends requirements
                                    
                                    
                                    (2.3
                                    )
                                    
                                    
                                    -
                                    
                                    
                                    
                                    
                                    (2.6
                                    )
                                    
                                    
                                    (14.8
                                    )
                                    
                                    
                                    (19.9
                                    )
                                    
                                    
                                    (17.7
                                    )Fixed
      charges
                                    
                                    
                                    31.4
                                    
                                    
                                    
                                    21.7
                                    
                                    
                                    
                                    
                                    51.8
                                    
                                    
                                    
                                    311.5
                                    
                                    
                                    
                                    307.1
                                    
                                    
                                    
                                    245.0Amortization
      of capitalized interest
                                    
                                    
                                    11.9
                                    
                                    
                                    
                                    8.9
                                    
                                    
                                    
                                    
                                    2.4
                                    
                                    
                                    
                                    13.8
                                    
                                    
                                    
                                    17.0
                                    
                                    
                                    
                                    18.1Capitalized
      interest
                                    
                                    
                                    (12.2
                                    )
                                    
                                    
                                    (9.5
                                    )
                                    
                                    
                                    
                                    (5.4
                                    )
                                    
                                    
                                    (39.0
                                    )
                                    
                                    
                                    (19.4
                                    )
                                    
                                    
                                    (14.6
                                    )Earnings
      adjusted for fixed charges
                                    
                                    
                                    154.5
                                    
                                    
                                    
                                    159.9
                                    
                                    
                                    
                                    
                                    (20.0
                                    )
                                    
                                    
                                    (724.6
                                    )
                                    
                                    
                                    720.5
                                    
                                    
                                    
                                    503.0Fixed
      charges:Pre-tax
      preferred dividends
                                    
                                    
                                    2.3
                                    
                                    
                                    
                                    -
                                    
                                    
                                    
                                    
                                    2.6
                                    
                                    
                                    
                                    14.8
                                    
                                    
                                    
                                    19.9
                                    
                                    
                                    
                                    (17.7
                                    )Interest
      expensed and capitalized, including amortization of capitalized expenses
      related to indebtedness
                                    
                                    
                                    24.6
                                    
                                    
                                    
                                    18.1
                                    
                                    
                                    
                                    
                                    47.5
                                    
                                    
                                    
                                    286.5
                                    
                                    
                                    
                                    278.6
                                    
                                    
                                    
                                    255.4Portion
      or rent expense representative of interest (1)
                                    
                                    
                                    4.5
                                    
                                    
                                    
                                    3.6
                                    
                                    
                                    
                                    
                                    1.7
                                    
                                    
                                    
                                    10.2
                                    
                                    
                                    
                                    8.6
                                    
                                    
                                    
                                    7.3Total
      fixed charges
                                    
                                    
                                    31.4
                                    
                                    
                                    
                                    21.7
                                    
                                    
                                    
                                    
                                    51.8
                                    
                                    
                                    
                                    311.5
                                    
                                    
                                    
                                    307.1
                                    
                                    
                                    
                                    245.0Ratio
      of earnings to fixed charges (2)
                                    
                                    
                                    4.9
                                    
                                    
                                    
                                    7.4
                                    
                                    
                                    
                                    
                                    -
                                    
                                    
                                    
                                    -
                                    
                                    
                                    
                                    2.3
                                    
                                    
                                    
                                    2.1




(1)
            One
      quarter of rent expense is deemed to be representative of
      interest.


(2)
            For
      purposes of calculating the ratio of earnings to fixed charges, earnings
      represent income from continuing operations before income taxes, less
      capitalized interest and pre-tax preferred dividends, plus amortization of
      capitalized interest and fixed charges.  Fixed charges include
      interest expense (including amortization of debt issuance costs), pre-tax
      preferred dividends, capitalized interest and the portion of operating
      rental expense that our management believes is representative of the
      interest component of rent expense.  The ratio of earnings to
      fixed charges is not presented for the two months ended December 31, 2007,
      and the year ended December 31, 2008 as the earnings were inadequate to
      cover fixed charges during those periods by $71.8 and $1,027.3
      respectively.