Is the boring machine ave diesel engine or does it use compressed air? I deliver diesel and a machine is about to be put into use in my route. Toronto Ont. TTC Subay line....

Tunnel boring machine

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shudd1588

Is the boring machine ave diesel engine or does it use compressed air? I deliver diesel and a machine is about to be put into use in my route. Toronto Ont. TTC Subay line.

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