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Inventories
12 Months Ended
Dec. 31, 2011
INVENTORIES: [Abstract]  
Inventories
INVENTORIES:
Inventory components consist of the following:
 
 
December 31,
 
2011
 
2010
Coal
$
105,378

 
$
108,694

Merchandise for resale
43,639

 
50,120

Supplies
109,318

 
99,724

Total Inventories
$
258,335

 
$
258,538



Merchandise for resale is valued using the last-in, first-out (LIFO) cost method. The excess of replacement cost of merchandise for resale inventories over carrying LIFO value was $22,406 and $19,624 at December 31, 2011 and December 31, 2010, respectively.