59(1)Where a person encounters methane in an area in a concentration under 1.25% by volume of methane, the person shall immediately notify a supervisor.
59(2)Where a supervisor is notified under subsection (1), the supervisor shall
(a)
designate the area as a fire hazard area,
(b)
ensure that adequate ventilation of the area is maintained, and
(c)
ensure that an employee monitors the concentration of methane in the area as long as there are employees in the area.
59(3)Where a person encounters methane in an area in a concentration equal to or exceeding 1.25% but not exceeding 2.5% by volume of methane, the person shall
(a)
cease all activity that might create a source of ignition, including diamond drilling,
(b)
warn other persons in the area of the presence of methane,
(c)
immediately notify a supervisor, and
(d)
take precautions to prevent the inadvertent entry of persons to the affected area.
59(4)Where methane is present in an area in a concentration equal to or exceeding 1.25% but not exceeding 2.5% by volume of methane, an employer shall ensure that
(a)
all activity that might create a source of ignition, including diamond drilling, ceases,
(b)
the area is or remains designated a fire hazard area,
(c)
an adequate level of ventilation is maintained in the area, and
(d)
an employee monitors the concentration of methane in the area as long as there are employees in the area.
59(5)Where a person encounters methane in an area in a concentration equal to or exceeding 2.5% by volume of methane, the person shall
(a)
cease all activity that might create a source of ignition, including diamond drilling,
(b)
warn other persons in the area of the presence of methane,
(c)
immediately notify a supervisor,
(d)
take precautions to prevent the inadvertent entry of persons to the affected area, and
(e)
evacuate the area.
59(6)Where methane is present in an area in a concentration equal to or greater than 2.5% by volume of methane, an employer shall ensure that
(a)
all sources of ignition are isolated, and
(b)
no person is permitted to remain or enter in the affected area, except in the case of an emergency, when adequately trained personnel equipped with self-contained breathing apparatus may enter the area.