Famed and unique is the network of subterranean mains which supply a score of factory towns in the German Ruhr with cheapest natural gas.
Epochal seems the recent project of fueling all German cities with a national network of such super gas mains.
Last week when a big subterranean main began to hiss softly at Duisburg, in the Ruhr, 40 people were gassed by the leak and five (including babes) met Death.
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