St. Nicholas Volume 40 Number 12 With Men Who Do Things: Revision history

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26 April 2024

  • curprev 11:4911:49, 26 April 2024DevonChristian talk contribs 5,422 bytes +5,422 Created page with "<br>Tunneling a city street is no simple task under any conditions. There were sewer-pipes, gas-pipes, water-pipes, electric light and power conduits, telephone, telegraph, and fire-alarm conduits, and the conduits for the underground trolley system of the electric cars, to be avoided. The gas-mains were elevated above the streets so that there would be no danger of an explosion, should they develop a leak, Of course, the man-holes or underground chambers, where connecti..."