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 […]
