The TC-44 sign must be installed where blasting is being done, whenever an electrical detonating system is in use adjacent to a highway. The TC-44 sign must be installed 1 km in advance of the blasting area.
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The TC-44 sign must be installed where blasting is being done, whenever an electrical detonating system is in use adjacent to a highway. The TC-44 sign must be installed 1 km in advance of the blasting area.