Subjgrp 57. Rotary Jet Piercing

• § 56.7801 - Jet drills.
• § 56.7802 - Oxygen hose lines.
• § 56.7803 - Lighting the burner.
• § 56.7804 - Refueling.
• § 56.7805 - Smoking and open flames.
• § 56.7806 - Oxygen intake coupling.
• § 56.7807 - Flushing the combustion chamber.