Paragraph 16

No person shall re-light any flame safety-lamp below ground (either at a lamp station or by means of a self-contained re-lighting contrivance) unless he has examined it and found it to be undamaged. Any person who has so re-lighted a safety-lamp shall forthwith again examine it and unless he finds it to be securely locked and in safe working order shall not allow it to be used or to remain lighted.

A person having a flame safety-lamp with a self-contained re-lighting contrivance shall not attempt to re-light it at any place at which there is reason to suspect the presence of inflammable gas.