Quarterly report pursuant to Section 13 or 15(d)

PROPERTY, PLANT AND EQUIPMENT

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PROPERTY, PLANT AND EQUIPMENT
 3 Months Ended
Mar. 31, 2013
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT
NOTE 5 - PROPERTY, PLANT AND EQUIPMENT
The following table indicates the value of each of the major classes of our consolidated depreciable assets as of March 31, 2013 and December 31, 2012:
 
(In Millions)
 
March 31,
2013
 
December 31, 2012
Land rights and mineral rights
$
7,922.8

 
$
7,920.8

Office and information technology
114.8

 
92.4

Buildings
190.7

 
162.0

Mining equipment
1,342.9

 
1,290.7

Processing equipment
2,081.9

 
1,937.4

Railroad equipment
242.1

 
240.8

Electric power facilities
61.4

 
58.7

Port facilities
114.7

 
114.3

Interest capitalized during construction
20.8

 
20.8

Land improvements
48.7

 
43.9

Other
53.1

 
39.0

Construction in progress
1,013.2

 
1,123.9

 
13,207.1

 
13,044.7

Allowance for depreciation and depletion
(1,970.8
)
 
(1,837.4
)
 
$
11,236.3

 
$
11,207.3


We recorded depreciation and depletion expense of $135.9 million and $111.4 million in the Statements of Unaudited Condensed Consolidated Operations for the periods ended March 31, 2013 and 2012, respectively.
The accumulated amount of capitalized interest included within construction in progress at March 31, 2013 is $24.2 million of which $7.1 million was capitalized during 2013. At December 31, 2012, $17.1 million of capitalized interest was included within construction in progress of which $15.4 million was capitalized during 2012.