Section 75.1508 - Training and records for examination, maintenance and repair of refuge alternatives and components(a) Persons examining, maintaining, or repairing refuge alternatives and components shall be instructed in how to perform this work.(1) The operator shall assure that all persons assigned to examine, maintain, and repair refuge alternatives and components are trained.(2) The mine operator shall certify, by signature and date, the training of persons who examine, maintain, and repair refuge alternatives and components.(b) At the completion of each repair, the person conducting the maintenance or repair shall make a record of all corrective action taken.(c) Training certifications and repair records shall be kept at the mine for one year. 73 FR 80699 , Dec. 31, 2008