Explore: Test Borings

The Boring test tunnel, or Hawthorne test tunnel is a 1.14 miles (1.83 km) tunnel in Hawthorne, California, for testing hyperloop and "loop-based transportation"

began designing its own tunnel boring machines, and completed several tests in Hawthorne, California. The Hawthorne test tunnel opened to the public on

Available through Google books. Accessed 27 Dec. 2007. Neményi, Paul. "Test Borings in the Britannica". New Republic. Feb. 19, 1951, p 17. Truesdell, C.

502. June 5, 1922. Retrieved August 6, 2018. "Appropriation, $1,500, Test Borings, Duboce Tunnel". Journal of Proceedings: Board of Supervisors, City and

construction history. Deep excavations in 2007 confirmed findings from earlier test borings, that several types of earth and clay from different sources had been

survey work in the canal in November 1967. By December 1967, NJDOT moved test borings to the Bureau of Navigation offices to make plans for the new Lovelandtown

Dover district. Coal was discovered in the area in 1890 when abandoned borings for the first Channel Tunnel project were used to investigate the local

underground launcher, although test borings were undertaken at a number of other locations. The remains of this test silo, known as U1, were rediscovered

the city's disapproval and, in March 1966, advertised for bids to make test borings for the third tube. The TBTA continued studying the feasibility of a

of a large dam there. Extensive test borings were made to determine the suitability of the land, and pressure tests were carried out on the material