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Facilities with signs
Turn off the phone in any facility where
warning signs request you to do so.
Airplanes
FCC regulations prohibit the use of phones
while in the air. Turn off your phone before
boarding an airplane.
Blasting Areas
To avoid interfering with blasting operations,
turn your phone off when in a 'blasting
area' or in areas with signs that read: 'Turn
off two-way radios' . Obey all signs and
instructions.
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Potentially Explosive Atmosphere
Turn off the phone when in an area with a
potentially explosive atmosphere, and obey
all signs and instructions.
Sparks in such areas could cause an
explosion or fire that could result in personal
injury or death.
Areas with a potentially explosive
atmosphere are often clearly marked, but
not always. Among the potentially dangerous
areas are:
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