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PLANT, PROPERTY AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2011

Schedule of plant, property and equipment

	2011			2010

December 31 (millions of dollars)	Cost	Accumulated Depreciation	Net Book Value	Cost	Accumulated Depreciation	Net Book Value

Pipeline	290.0	110.0	180.0	290.1	100.6	189.5
Compression	104.8	19.5	85.3	113.4	24.5	88.9
Metering and other	42.4	9.3	33.1	42.2	8.2	34.0
Under construction	0.1	–	0.1	0.2	–	0.2

	437.3	138.8	298.5	445.9	133.3	312.6

- 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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