After 21 years of service, corrosion necessitates application of new tape and asphalt cement on bracket bars; relatively few roof bolts need replacement; special work train provided.
Boston and Maine repairs trolley supports in Hoosac Tunnel
Ry Elec Engr
Railway Electrical Engineer ; 23 , n 5 ; p 115-117 + 25
1932
Article (Journal)
English
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Electric traction in the Hoosac tunnel; Boston and Maine R. R.
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New catenary construction for the hoosac tunnel
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