Denver, Colorado Mary Johnston (303) 781-4381 (ph) (303) 783-9091 (fax) 518 17th Street Suite 914 Denver, CO 80202 United StatesMidland, TX Steve Rister (432) 684-5833 (ph) (432) 684-6431 (fax) 700 S. Marienfeld Midland, TX 79701 United States Tulsa, OK Nancy Endecott (918) 584-3366 (ph) (918) 585-5272 (fax) 211 S. Cheyenne Tulsa, OK 74103 United States
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