"Air plant" Quotes from Famous Books
... in November and December, 1905. The consumption of air in the four tunnels soon exceeded 15,000 cu. ft. for 24 hours, and in Tunnel D, on several occasions, it exceeded 7,000 cu. ft. for a like period. Blows had become frequent, and it was evident that the air plant was inadequate for driving four tunnels at once in the open material east of the Manhattan rock. Work in Tunnel A, therefore, was not resumed, after the suspension on December 29th, for about ten months, and Tunnel C was also closed down for more than four months of ... — Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910 • James H. Brace, Francis Mason and S. H. Woodard |