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INCOME TAXES (Tables)
12 Months Ended
Dec. 31, 2011
INCOME TAXES [Abstract]  
Income Tax Provision (Benefit) Related to Earnings
The following table summarizes the Company's income tax provision (benefit) related to earnings for the years ended December 31 (in millions):

   
2011
  
2010
  
2009
 
Current:
         
Federal
 $27.9  $20.6  $22.1 
State
  6.2   5.2   5.6 
Foreign
  9.7   11.1   19.9 
Total current
  43.8   36.9   47.6 
Deferred:
            
Federal
  (1.9)  6.3   23.2 
State
  (0.4)  1.6   5.8 
Foreign
  6.8   (0.2)  (3.4)
Total deferred
  4.5   7.7   25.6 
Total provision for income taxes
 $48.3  $44.6  $73.2 

Income Tax Expense Reconciliation
The following table summarizes components of earnings before taxes and shows the tax effects of significant adjustments from the expected tax expense computed at the federal statutory rate for the years ended December 31 (in millions):

   
2011
  
2010
  
2009
 
Domestic income
 $141.5  $142.4  $197.0 
Foreign income
  55.8   52.8   40.1 
Earnings before income taxes
  197.3   195.2   237.1 
Computed tax at the U.S. federal statutory rate of 35%
  69.0   68.3   83.0 
Foreign income, mining, and withholding taxes, net of U.S.federal deduction
  (2.0)  (1.5)  1.0 
Percentage depletion in excess of basis
  (10.9)  (11.0)  (8.1)
Release of tax reserves due to agreement with taxing authorities
  -   (5.9)  - 
Other domestic tax reserves, net of reversals
  (1.6)  (1.4)  (2.1)
Domestic manufacturers deduction
  (1.8)  (2.7)  (2.0)
State income taxes, net of federal income tax benefit
  3.6   5.0   7.7 
Change in valuation allowance on deferred tax assets
  (0.8)  0.1   0.3 
Interest expense recognition differences
  (6.8)  (7.0)  (6.1)
Other
  (0.4)  0.7   (0.5)
Provision for income taxes
 $48.3  $44.6  $73.2 
Effective tax rate
  24%  23%  31%
 
Significant Components of Deferred Tax Assets and Liabilities
The significant components of the Company's deferred tax assets and liabilities were as follows at December 31 (in millions):
 
   
2011
  
2010
 
Current deferred tax assets:
      
Alternative minimum tax credit carryforwards
 $0.4  $- 
Accrued expenses
  1.3   2.0 
Other, net
  5.5   11.8 
Current deferred tax assets
  7.2   13.8 
Current deferred tax liabilities:
        
Unrealized foreign exchange gains
  0.9   - 
Other, net
  (0.5)  - 
Current deferred tax liabilities
  0.4   - 
Noncurrent deferred taxes:
        
Property, plant and equipment
  70.9   70.9 
Intangible asset
  8.5   - 
Total noncurrent deferred tax liabilities
  79.4   70.9 
Deferred tax assets:
        
Net operating loss carryforwards
  2.6   3.1 
Other, net
  7.6   10.3 
Subtotal
  10.2   13.4 
Valuation allowance
  (1.5)  (2.3)
Total noncurrent deferred tax assets
  8.7   11.1 
Net noncurrent deferred tax liabilities
 $70.7  $59.8 

Reconciliation of Unrecognized Tax Benefits
The following table shows a reconciliation of the beginning and ending amount of unrecognized tax benefits (in millions):


   
2011
  
2010
  
2009
 
Unrecognized tax benefits:
         
Balance at January 1
 $23.9  $23.3  $18.1 
Additions resulting from current year tax positions
  1.8   0.4   2.2 
Additions relating to tax positions taken in prior years
  1.3   10.9   3.1 
Reductions due to cash payments
  (0.6)  (3.6)  - 
Reductions due to settlements
  -   (6.4)  - 
Reductions relating to tax positions taken in prior years
  (0.4)  (0.4)  (0.1)
Reductions due to expiration of tax years
  (0.4)  (0.3)  - 
Balance at December 31
 $25.6  $23.9  $23.3