Enlarged to permit passage of largest cars used by railroads of country; major excavation over a length of 4000 ft. near west portal was at its greatest depth about 2 ft. and 9 in.; handling excavated material under track and disposing of it without interfering with trains; overhead rock excavation. Reprinted from "Boston and Maine Railroad Employees Magazine." (See also Boston Soc. Civil Engrs. -- Jl vol. 15, no. 7, Sept. 1928 pp. 349-353, 1 fig)
Hoosac tunnel enlargement
Eng. Contracting
1928
2 pages
Article (Journal)
English
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