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ADDITIONAL BALANCE SHEET INFORMATION (Tables)
 6 Months Ended
Jun. 30, 2013
ADDITIONAL BALANCE SHEET INFORMATION [Abstract]  
Inventories
Our inventories at June 30, 2013 and December 31, 2012 are comprised of the following components:

 
June 30,
  
December 31,
 
 
2013
  
2012
 
Crude stockpile inventories
 
$
50.4
  
$
60.8
 
In-process and finished goods inventories
  
73.6
   
70.5
 
Other raw material, container, and supplies inventories
  
23.6
   
22.5
 
 
$
147.6
  
$
153.8
 
Reclamation liability
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, current activities, and changes in estimated future cash outflows. A reconciliation of the activity within our reclamation liability is as follows:
 
 
Six Months Ended
 
 
June 30,
 
 
2013
  
2012
 
Balance at beginning of period
 
$
9.5
  
$
9.3
 
Settlement of obligations
  
(1.3
)
  
(3.2
)
Liabilities incurred and accretion expense
  
0.1
   
2.9
 
Foreign currency
  
(0.5
)
  
0.3
 
        
Balance at end of period
 
$
7.8
  
$
9.3