NEPM’s Carrie Healy recently stood at about 1,900 feet above sea level in Florida, Massachusetts, on a mountain in the Hoosac Range. Nearby is the central shaft. It now provides ventilation to the ...
Hoosac Tunnel : on what plan, in what time, at what cost, and by what means can it be finished? / reply of H. Haupt to a communication from members of the Legislature of Massachusetts of 1868 ...
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