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Property, Plant and Equipment
12 Months Ended
Aug. 31, 2014
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, Plant and Equipment

A summary of property, plant and equipment as of August 31, 2014 and 2013 is as follows:
 
2014
 
2013
 
(Dollars in thousands)
Land and land improvements
$
212,609

 
$
169,022

Buildings
686,371

 
574,834

Machinery and equipment
4,558,485

 
4,195,523

Office and other
133,599

 
118,442

Construction in progress
1,018,011

 
480,703

 
6,609,075

 
5,538,524

Less accumulated depreciation and amortization
2,578,052

 
2,367,120

Total property, plant and equipment 
$
4,031,023

 
$
3,171,404



Depreciation expense for the years ended August 31, 2014, 2013 and 2012, was $253.3 million, $224.5 million and $199.8 million, respectively.