All payees are required to provide a social security/tax identification number or the payee will be subject to tax withholding under applicable Internal Revenue Service regulations.

Quicksilver Resources mails the Forms 1099-Misc by January 31 each year. Quicksilver will also be mailing the forms for Terra Energy Ltd., a wholly-owned subsidiary of Quicksilver Resources Inc.

IRS regulations do not require Quicksilver to furnish this information for non-resident aliens, non-profit organizations, incorporated entities, royalty owners who have annual payments of less than $10, or for non-employee compensation of less than $600 (working interest owners/others).

Quicksilver will also be mailing Forms 1042-S for non-resident aliens by March 15th.

Information regarding qualified volumes for Section 29 Non-conventional Fuels Credit and for marginal wells will be mailed with all checks at the end of March.

For information regarding Forms 1099 or Forms 1042, please call 817-877-1787 or write:

Tax Department
Quicksilver Resources Inc.
777 West Rosedale, Suite 300
Fort Worth, TX 76104

Email: taxdepartment@qrinc.com