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Author: Admin | 2025-04-28
William Brunton and John Allen Davis, Modern Tunneling: With Special Reference to Mine and Water-supply Tunnels (New York, New York: John Wiley & Sons, 1914), p. 182.^ Frederick Edward Blackett Beaumont, U.K. Patent no. 1,904 (issued: July 30, 1864). (See: Patents for Inventions. Abridgments of Specifications relating to Mining, Quarrying, Tunnelling, and Well-sinking (London, England: Office of the Commissioners of Patents for Inventions, 1874), p. 247. Archived 2023-07-28 at the Wayback Machine)^ F.E.B. Beaumont, U.K. Patent no. 4,166 (issued: Dec. 2, 1875). (See: Patents for Inventions. Abridgments of Specifications. Class 85, Mining, Quarrying, Tunnelling, and Well-sinking (London, England: Patent Office, 1904), p. 169. Archived 2023-07-28 at the Wayback Machine)^ Thomas English, U.K. Patent no.s 4,347 (issued: October 25, 1880) and 5,317 (issued: December 5, 1881); "Tunneling-machine," U.S. patent 307,278 (filed: June 4, 1884 ; issued: October 28, 1884).^ Wilson, Jeremy; Spick, Jérôme (1994). Eurotunnel: The Illustrated Journey. New York, NY, USA: Harper Collins. pp. 14–21. ISBN 0-00-255539-5.^ Terry Gourvish, The Official History of Britain and the Channel Tunnel (Abington, England: Routledge, 2006), Chapter 1, § 2: The commercial possibilities: Lord Richard Grosvenor, Sir Edward Watkin and the 'Manchester to Paris Railroad'.^ West 1988, p. 248.^ American Society of Civil Engineers. "Hudson and Manhattan Railroad Tunnel". www.asce.org. Retrieved 2023-10-17.^ "ASCE Metropolitan Section - Hudson & Manhattan Tunnel". www.ascemetsection.org. Retrieved 2023-10-17.^ See:Bancroft 1908, pp. 66, 125, 127, 146Thales Lindsey, "Improved machine for tunneling rock," U.S. patent 55,514 (issued: June 12, 1866).Pedro Unanue, "Tunneling machine," U.S. patent 732,326 (filed: December 23, 1901; issued:
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