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Inventories
9 Months Ended
Sep. 30, 2012
Inventories [Abstract]  
Inventories
5. Inventories

Inventories used in determining cost of sales were as follows (in thousands of dollars):

 
September 30,
 
 
December 31,
 
 
2012
 
 
2011
 
Gross inventories @ FIFO:
 
 
 
 
 
 
Finished goods
 
$
27,486
 
 
$
11,914
 
Work in progress
 
 
33,346
 
 
 
27,749
 
Raw materials & component parts
 
 
178,040
 
 
 
144,731
 
Maintenance, tooling & supplies
 
 
18,155
 
 
 
17,001
 
Total gross inventories @ FIFO
 
 
257,027
 
 
 
201,395
 
Less reserves:
 
 
 
 
 
 
 
 
LIFO
 
 
34,103
 
 
 
32,103
 
Valuation
 
 
4,113
 
 
 
3,144
 
Total inventories as reported
 
$
218,811
 
 
$
166,148
 
 
Gross inventories on a first in, first out ("FIFO") basis before adjustments for reserves shown above that were accounted for on a last in, first out ("LIFO") basis were $123.0 million and $97.9 million at September 30, 2012 and December 31, 2011, respectively.