MECHINERY OF EXAMINATION
No machinery shall be operated otherwise thanby or under constant supervision of a competent person.In a gassy seam of second or third degree no person shall be appointed to supervise or operate any electrical machinery, apparatus or appliance unless he holds a gas testing certificate.every such person shall be provided with the carry an approved flame safety lamp while on duty.Every person in charge of any machinery or appliance shall,before commencing work,see that it is in proper working order,and if he observes any defect therin he shall immediately report that fact the manger,engineer or other competent person. Every per...