No Entry To Unauthorised Personnel image

No Entry To Unauthorised Personnel

Switch Off Mobiles image

Switch Off Mobiles

Do Not Clean Or Oil This Machine image

Do Not Clean Or Oil This Machine

Do Not Switch Off image

Do Not Switch Off

No Naked Lights image

No Naked Lights

No Unauthorised Persons Beyond This Point image

No Unauthorised Persons Beyond This Point

No Entry Ventilate First image

No Entry Ventilate First

Smoking Strictly Forbidden image

Smoking Strictly Forbidden

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