Western Gas Resources Inc Watch

from SC 13D/A 1 page Underwriting agreement

from SC 13D/A 1 page Underwriting agreement

from SC 13D/A ~5 pages Underwriting agreement

from SC 13D 1 page Exhibit 1 Joint Filing Agreement Pursuant to Rule 13d-1(k)(1) the Undersigned Acknowledge and Agree That the Foregoing Statement on Schedule 13d Is Filed on Behalf of Each of the Undersigned and That All Subsequent Amendments to This Statement on Schedule 13d Shall Be Filed on Behalf of Each of the Undersigned Without the Necessity of Filing Additional Joint Filing Agreements. the Undersigned Acknowledge That Each Shall Be Responsible for the Timely Filing of Such Amendments, and for the Completeness and Accuracy of the Information Concerning It Contained Therein, but Shall Not Be Responsible for the Completeness and Accuracy of the Information Concerning the Others, Except to the Extent That It Knows or Has Reason to Believe That Such Information Is Inaccurate. This Agreement May Be Executed in Any Number of Counterparts and All of Such Counterparts Taken Together Shall Constitute One and the Same Instrument. Dated: April 25, 2005 Third Point LLC By: /S/ Daniel S. Loeb Name: Daniel S. Loeb Title: Managing Member /S/ Daniel S. Loeb Daniel S. Loeb [Joint Filing Agreement for Schedule 13d With Respect to Western Gas Resources, Inc.]

from S-4 ~20 pages Purchase Agreement Dated June 10, 1999

from 8-K ~5 pages Pricing Agreement

from 8-K ~20 pages Underwriting Agreement

from 8-K 1 page <page> Exhibit 1.2 Consent of Independent Accountants We Hereby Consent to the Incorporation by Reference in the Prospectus Constituting Part of This Registration Statement on Form S-3 of Our Report Dated February 23, 1996 Appearing on Page 27 of Western Gas Resources, Inc.'s Annual Report on Form 10-K for the Year Ended December 31, 1995. We Also Consent to the Reference to US Under the Heading "Experts" in Such Prospectus. Price Waterhouse Llp Denver, Colorado November 1, 1996

from 8-K 1 page <page> Exhibit 1.1 Consent of Independent Engineers Williamson Petroleum Consultants, Inc. (Williamson) Hereby Consents to the Reference to Williamson and Our Report Entitled "Evaluation of Oil and Gas Reserves to the Interests of Western Gas Resources, Inc. in the Black Lake Field, Natchitoches Parish, Louisiana, Effective June 30, 1996, for Disclosure to the Securities and Exchange Commission, Williamson Project 6.8418" in the Western Gas Resources, Inc. Prospectus Supplement to Prospectus Dated October 11, 1996 to Be Filed on November 1, 1996. Williamson Petroleum Consultants, Inc. Houston, Texas October 31, 1996