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places such as hospitals, airports, service stations, refineries,
chemical works etc. Switch off your phone as required.
4.5
PRECAUTIONS FOR EXPLOSIVE ATMOSPHERES
Switch off your phone prior to entering any area with potentially
explosive atmospheres, such as fuel or chemical transfer or
storage facilities.
Do not remove, install, or charge batteries in such areas. Spark
in a potentially explosive atmosphere can cause explosion or fire.
To avoid possible interference with blasting operations switch
off your phone when you are near electrical blasting caps, in a
blasting area, or in areas posted “Turn off electronic devices.”
Obey all signs and instructions.
Do not store the phone with flammable or explosive articles.