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ADDITIONAL BALANCE SHEET INFORMATION
 9 Months Ended
Sep. 30, 2012
Summary of Significant Accounting Policies / Additional Balance Sheet Information [Abstract]  
ADDITIONAL BALANCE SHEET INFORMATION
Note 4:
ADDITIONAL BALANCE SHEET INFORMATION

Our inventories at September 30, 2012 and December 31, 2011 are comprised of the following components:

 
September 30,
2012
 
 
December 31,
2011
 
Crude stockpile inventories
 
$
61.6
 
 
$
54.5
 
In-process and finished goods inventories
 
 
71.4
 
 
 
64.4
 
Other raw material, container, and supplies inventories
 
 
27.8
 
 
 
25.9
 
 
$
160.8
 
 
$
144.8
 

We mine various minerals using a surface mining process that requires the removal of overburden.  In certain areas and under various governmental regulations, we are obligated to restore the land comprising each mining site to its original condition at the completion of the mining activity.  We include an estimate of this reclamation liability in our condensed consolidated balance sheets; it is adjusted to reflect the passage of time and changes in estimated future cash outflows.  A reconciliation of the activity within our reclamation liability is as follows:

 
Nine Months Ended
September 30,
 
 
2012
 
 
2011
 
Balance at beginning of period
 
$
9.3
 
 
$
7.5
 
Settlement of obligations
 
 
(3.1
)
 
 
(2.8
)
Liabilities incurred and accretion expense
 
 
3.8
 
 
 
4.4
 
Foreign currency
 
 
(0.1
)
 
 
(0.3
)
 
 
 
 
 
 
 
 
Balance at end of period
 
$
9.9
 
 
$
8.8