Maryland Environment Section 15-312

      All first-class mine foremen and fire-boss certificate holders shall be subject to continuing education every 3 years. The continuing education shall emphasize mine health and safety legislation and regulations, advances in mining technology, and advances in first aid that have occurred since the certificate holder's most recent examination. All first-class mine foremen and fire-boss certificates issued prior to July 1, 1980 shall expire no later than July 1, 1983 unless reissued in accordance with this section.