Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 The New York Tunnel Extension of the Pennsylvania Railroad. The Cross-Town Tunnels. Paper No. 1158
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AMERICAN SOCIETY OF CIVIL ENGINEERS
INSTITUTED 1852
TRANSACTIONS
Paper No. 1158
THE NEW YORK TUNNEL EXTENSION OF THE PENNSYLVANIA RAILROAD. THE CROSS-TOWN TUNNELS.[A]
Progress of Excavation.
TABLE 1.—Progress and Methods of Excavation in Good Ground.
Thirty-Third Street.
Thirty-Second Street.
FOOTNOTES:
TABLE 1.—Progress and Methods of Excavation in Good Ground.
Thirty-Third Street.
Thirty-Second Street.
FOOTNOTES:
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