The TC-45 sign must be installed where blasting is being done, whenever an electrical detonating system is in use adjacent to a highway.The TC-45 sign must be installed 1 km past the end of the blasting area.
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The TC-45 sign must be installed where blasting is being done, whenever an electrical detonating system is in use adjacent to a highway.The TC-45 sign must be installed 1 km past the end of the blasting area.