N.C. Gen. Stat. § 106-327

Each owner of cattle affected with Bang's disease or tuberculosis, which have been appraised, and which have been authorized by the State Veterinarian to be marketed, shall market the cattle within 30 days and shall obtain from the purchaser a report in triplicate. One copy to be sent by the State Veterinarian at once, certifying as to the amount of money actually paid for the animals, all animals to be identified on report.