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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Summary of Significant Accounting Policies

Schedule of lives used in computing depreciation for depreciable assets

Asset		Range of Useful Lives, in Years

Improvements to land		15 to 30
Buildings		20 to 30
Machinery and equipment		5 to 30
Automotive equipment		5 to 15
Furniture and fixtures		3 to 10
Railcars		25 to 40

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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