Many years ago, T.C. Poulter revealed some loud surprises from Antarctica, in the study “Arctic and Antarctic Acoustics,” T.C. Poulter, Stanford Research Institute Biological Sonar Lab, 1966. Poulter reports: …first observed in the Antarctic in 1934 during the construction of a tunnel through the very porous, coarsely crystalline snow for communication during the winter night […]
This document, billed as a US government secret history of a surveillance tunnel dug in Berlin during the cold war (“Clandestine Services History: The Berlin Tunnel Operation 1952-1956“, CS document #150), tells of a difficult moment for the surveyors: The lack of an adequate base line made the surveying problem especially difficult. The engineers decided […]
Ptak Science Books found an apparently serious engineering proposal that echoes a satire done more than 100 years earlier: John B. Prather launched an idea in 1945 for building a high-speed pneumatic passenger/freight train connecting New York City to Philadelphia. [It’s described in his] New York-Philadelphia Vacuum Tunnel, Preliminary Design Features and Economic Analysis… One […]
The journey between London and Edinburgh would be much quicker had the London and Edinburgh Vacuum Tunnel Company been allowed and able to build a breathtaking new piece of technology, back when land was cheap and all things seemed possible. The 29 January, 1825 issue of The Mechanics Register presents the scheme in detail: “The […]
From New Scientist‘s Feedback column: CAMPAIGNING for another bridge or tunnel across the Thames river in London, blackwalltunnel.com presents meters showing the traffic flowing into and out of each portal of the existing Blackwall tunnel. Checking the site at 5 pm on a Friday, Feedback was concerned to see huge numbers of vehicles entering the […]