EXHIBIT 23.3 [MCDANIEL & ASSOCIATES LETTERHEAD APPEARS HERE] INDEPENDENT PETROLEUM ENGINEER'S CONSENT We hereby consent to the incorporation by reference in the Annual Report on Form 10-K of Southern Mineral Corporation, a Nevada corporation (the "Company"), of the references to this firm and to its reports listed below for the Company's estimated Canadian proved reserve contained in the Annual Report on Form 10-K for the year ended December 31, 1999. 1. Report of Canadian reserve estimates as of December 31, 1996 2. Report of Canadian reserve estimates as of December 31, 1997 McDANIEL & ASSOCIATES CONSULTANTS LTD. /s/ W.C. Seth - ------------------------ W.C. Seth, P Eng. President & Managing Director Calgary, Alberta Dated: March 29, 2000