The license of an inspector, sampler, or weigher may be suspended, pending final action by the Secretary, by any official authorized to countersign licenses whenever he considers such action to be for the best interest of the service. The designation of an appeal inspector may be withdrawn at any time by the Division. Before the license of an inspector, sampler, or weigher is terminated or revoked pursuant to the Act and the regulations in this subpart, such appointee or licensee shall be furnished by the Secretary, or his designated representative, with a written statement specifying the charges, and within 7 days after his suspension, the licensee may file an appeal in writing with the Secretary supported by any evidence he may wish to offer in connection therewith.