(a) Any person who is a Federal or State employee, the employee of a local jurisdiction, or the employee of a cooperating agency possessing proper qualifications as determined by an examination for competency and who is to perform grading service under this part, may be licensed by the Secretary as a grader.

(b) All licenses issued by the Secretary shall be countersigned by the officer in charge of the shell egg grading service of the AMS or any other designated officer.

(c) Any person, who is employed at any official plant and possesses proper qualifications, as determined by the Administrator, may be authorized to candle and grade eggs on the basis of the “U.S. Standards for Quality of Individual Shell Eggs,” with respect to eggs purchased from producers or eggs to be packaged with official identification. In addition, such authorization may be granted to any qualified person to act as a “quality assurance inspector” in the packaging and grade labeling of products. No person to whom such authorization is granted shall have authority to issue any grading certificates, grading memoranda, or other official documents; and all eggs which are graded by any such person shall thereafter be check graded by a grader.