43 C.F.R. § 20.403 Certificates of disclaimer.
Title 43 - Public Lands: Interior
(a) Each employee of the U.S. Geological Survey, Bureau of Land Management, Minerals Management Service, and Office of Surface Mining Reclamation and Enforcement shall sign a certificate of disclaimer upon entrance to or upon transfer to a position within any of these bureaus. The employee's signature will indicate that he or she: (1) Is aware of the specific restrictions pertinent to his or her employment; and (2) Is in compliance with such restrictions. (b) If an employee is unable to sign the certificate, he or she must submit a statement of facts to the appropriate ethics counselor for review and appropriate action. (c) Signed certificates of disclaimer shall be filed and maintained by the employee's deputy ethics counselor.
Title 43: Public Lands: Interior
PART 20—EMPLOYEE RESPONSIBILITIES AND CONDUCT
Subpart D—Special Provisions Governing Financial and Other Outside Interests of Certain Employees of the Department
§ 20.403 Certificates of disclaimer.

