54(1)An employer shall ensure that at least one person designated by the employer and one person designated by the employee representatives of the committee is present underground during each regularly scheduled shift working underground in those areas designated by the committee and that they are authorized to test the air in an area referred to in subsection (3) when contacted by a supervisor for that purpose.

54(2)If no areas have been designated by the committee, an employer shall ensure that at least one person designated by the employer and one person designated by the employee representatives of the committee is present underground during each regularly scheduled shift working underground and that they are authorized to test the air in an area referred to in subsection (3) when contacted by a supervisor for that purpose.

54(3)Upon the reasonable request of an employee to a supervisor for a test of the air in the area where the employee is working or for a verification of an earlier air test in the area, the supervisor shall, as soon as reasonably possible after the request is made, contact both a person designated by the employer and a person designated by the employee representatives of the committee to test the air in the area.

54(4)A person contacted by a supervisor for the purpose of this section shall as soon as reasonably possible after being contacted conduct such tests of the air for oxygen or air contaminants as the person considers necessary or advisable.

54(5)An employer shall ensure that a person designated under this section has access to the air monitoring equipment, the air monitoring plan and the data acquired pursuant to the plan when called upon to conduct a test of the air underground.

54(6)An employer shall ensure that a person designated under this section and all members of the committee have received sufficient training to be capable of testing the air underground for oxygen and air contaminants and evaluating the results of the test.