U.S. GEOLOGICAL SURVEY DIGITAL DATA SERIES DDS-33 ---------------------------------------------------------------------------------------- 3-D Reservoir Characterization of the House Creek Oil Field, Powder River Basin, Wyoming, V1.00 ---------------------------------------------------------------------------------------- USER REGISTRATION This 3-D Reservoir Characterization of the House Creek Oil Field, Powder River Basin, Wyoming, disc is one of a series of open-file and formal digital data releases using CD- ROM as the publication medium. By providing the information listed below, you will be assisting us at the U.S. Geological Survey in filling your data and research needs. Listings of "New Publications of the U.S. Geological Survey" can currently be accessed through the following Web site http://pubs.usgs.gov/publications/ . User name(s) _________________________ ___________________________ Address (Line 1) _____________________________________________________ Address (Line 2) _____________________________________________________ City State Zip Code ____________________________________________________________________ Work Phone Number ___________________________________________________ ---------------------------------------------------------------------------------------- Comments (please use the reverse side of this page for comments) Any comments and suggestions you wish to make as to how well this CD-ROM meets your needs and how the system can be improved will be greatly appreciated. Suggestions might include new software features you would like to see implemented and ease in display and explanations of the data. Use additional pages if needed. Please return this registration form to the following address, or e-mail the information to the address at the bottom of this form: U.S. Geological Survey CD-ROM Support Center 904 National Center Reston, VA 22092-9998

Thank you for your interest, /s/ Debra Higley <higley@USGS.GOV