Exhibit 12.1

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

(Dollars in millions,
except ratios)



|                                                                                                                                                                                  |  |                                    |      |  |                         |   |      |      |  |   |      |  |  |      |      |   |  |   |      |   |  |   |      |  
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------- | ---- |  | ----------------------- | - | ---- | ---- |  | - | ---- |  |  | ---- | ---- | - |  | - | ---- | - |  | - | ---- | -
|                                                                                                                                                                                  |  | Three Months EndedFebruary 28,2011 |      |  | Year Ended November 30, |  
|                                                                                                                                                                                  |  | 2010                               |      |  | 2009                    |   |      | 2008 |  |   | 2007 |  |  | 2006 |     
|                                                                                                                                                                                  |  |                                    |      |  |                         |  
|Pre-tax income (loss) from continuing operations                                                                                                                                  |  | $                                  | 3.3  |  |                         | $ | 18.5 |      |  | $ | 27.9 |  |  | $    | (2.0 | ) |  | $ | (6.9 | ) |  | $ | 3.3  |  
|Adjustment for (income) loss from equity investees                                                                                                                                |  |                                    |     |  |                         |   |     |      |  |   |     |  |  |      | (.2  | ) |  |   | (1.2 | ) |  |   | (2.3 | )
|                                                                                                                                                                                  |  |                                    |      |  |                         |   |      |      |  |   |      |  |  |      |      |   |  |   |      |   |  |   |      |  
|Pre-tax income (loss) from continuing operations before adjustment for minority interests in consolidated subsidiaries or income
or loss from equity investees                    |  | $                                  | 3.3  |  |                         | $ | 18.5 |      |  | $ | 27.9 |  |  | $    | (2.2 | ) |  | $ | (8.1 | ) |  | $ | 1.0  |  
|Distributed income equity investees                                                                                                                                               |  |                                    |     |  |                         |   |     |      |  |   |     |  |  |      |     |   |  |   |     |   |  |   | .5   |  
|Less: Capitalized interest                                                                                                                                                        |  |                                    |     |  |                         |   |     |      |  |   |     |  |  |      |     |   |  |   |     |   |  |   |     |  
|Amortization of interest previously capitalized                                                                                                                                   |  |                                    |     |  |                         |   |     |      |  |   |     |  |  |      |     |   |  |   |     |   |  |   |     |  
|                                                                                                                                                                                  |  |                                    |      |  |                         |   |      |      |  |   |      |  |  |      |      |   |  |   |      |   |  |   |      |  
|Adjusted pre-tax income (loss) from continuing operations before adjustment for minority interests in consolidated subsidiaries
or income or loss from equity investees           |  | $                                  | 3.3  |  |                         | $ | 18.5 |      |  | $ | 27.9 |  |  | $    | (2.2 | ) |  | $ | (8.1 | ) |  | $ | 1.5  |  
|                                                                                                                                                                                  |  |                                    |      |  |                         |   |      |      |  |   |      |  |  |      |      |   |  |   |      |   |  |   |      |  
|                                                                                                                                                                                  |  |                                    |      |  |                         |  
|Fixed Charges:                                                                                                                                                                    |  |                                    |      |  |                         |   |      |      |  |   |      |  |  |      |      |   |  |   |      |   |  |   |      |  
|Interest expense                                                                                                                                                                  |  | $                                  | 8.6  |  |                         | $ | 8.0  |      |  | $ | 7.5  |  |  | $    | 12.3 |   |  | $ | 15.7 |   |  | $ | 20.3 |  
|Interest capitalized during the period                                                                                                                                            |  |                                    |     |  |                         |   |     |      |  |   |     |  |  |      |     |   |  |   |     |   |  |   |     |  
|Amortization of debt issuance costs                                                                                                                                               |  |                                    | .7   |  |                         |   | .7   |      |  |   | .6   |  |  |      | .7   |   |  |   | .8   |   |  |   | 1.0  |  
|Imputed interest portion of rent expense                                                                                                                                          |  |                                    | .3   |  |                         |   | 1.3  |      |  |   | 1.3  |  |  |      | 1.6  |   |  |   | 1.5  |   |  |   | 1.8  |  
|                                                                                                                                                                                  |  |                                    |      |  |                         |   |      |      |  |   |      |  |  |      |      |   |  |   |      |   |  |   |      |  
|Total Fixed Charges                                                                                                                                                               |  | $                                  | 9.6  |  |                         | $ | 10.0 |      |  | $ | 9.4  |  |  | $    | 14.6 |   |  | $ | 18.0 |   |  | $ | 23.1 |  
|                                                                                                                                                                                  |  |                                    |      |  |                         |   |      |      |  |   |      |  |  |      |      |   |  |   |      |   |  |   |      |  
|                                                                                                                                                                                  |  |                                    |      |  |                         |  
|Pre-tax income (loss) from continuing operations before adjustment for minority interests in consolidated subsidiaries or income
or loss from equity investees plus fixed charges |  | $                                  | 12.9 |  |                         | $ | 28.5 |      |  | $ | 37.3 |  |  | $    | 12.4 |   |  | $ | 9.9  |   |  | $ | 24.6 |  
|                                                                                                                                                                                  |  |                                    |      |  |                         |   |      |      |  |   |      |  |  |      |      |   |  |   |      |   |  |   |      |  
|                                                                                                                                                                                  |  |                                    |      |  |                         |  
|Ratio of Earnings to Fixed Charges(a)                                                                                                                                             |  |                                    | 1.3  |  |                         |   | 2.8  |      |  |   | 4.0  |  |  |      |     |   |  |   |     |   |  |   | 1.1  |  
|                                                                                                                                                                                  |  |                                    |      |  |                         |   |      |      |  |   |      |  |  |      |      |   |  |   |      |   |  |   |      |