Medical examination records in mines must be retained, transferred on request, and handed over when examining authority duties end. Retention and transfer of medical examination records for persons employed or to be employed in a mine are required to document medical history, job details and occupational dust exposure profile. The manager of the mine must keep all such medical records while the person remains employed and for five years thereafter. If requested by the manager of another mine where the person is to be employed, the manager must send the relevant medical certificates.