(1) Our all-sources finding cost excludes the coalbed methane unproved property costs we contributed as a minority investment to Pinnacle Gas Resources, Inc. in June 2003 and, accordingly, is no longer included in our consolidated operations.

For the three year period ended December 31, 2003, our total adjusted costs for development, exploration and acquisition activities was approximately $83.8 million. Total exploration, development and acquisition activities for the three year period ended December 31, 2003 have added approximately 41.9 Bcfe of net proved reserves at an all-sources finding cost of $2.00 per Mcfe.

Our finding and development costs have historically fluctuated on a year-to-year basis. Finding and development costs, as measured annually, may not be indicative of our ability to economically replace oil and natural gas reserves because the recognition of costs may not necessarily coincide with the addition of proved reserves.

DEVELOPMENT, EXPLORATION AND ACQUISITION CAPITAL EXPENDITURES

The following table sets forth certain information regarding the gross costs incurred in the purchase of proved and unproved properties and in development and exploration activities.


(1) Excludes capitalized interest on unproved properties of $3.2 million, $3.1 million and $2.9 million for the years ended December 31, 2001, 2002, and 2003, respectively, and includes capitalized overhead of $1.0 million, $1.0 million and $1.4 million for the years ended December 31, 2001, 2002 and 2003, respectively. The table also includes non-cash asset retirement obligations of

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