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abutment angles April 14 Ashokan Reservoir Avenue Bay Ridge Bldg Board of Directors Board of Water boiler borings bottom Broadway Brown's Station building cement Club combustion Committee connection construction Contractors core cost Creek cylinder dams depth drill EAST RIVER TUNNEL Esopus Esopus Creek flange floor floorbeams fuel furnace gage girders grade hole hydraulic hydraulic machinery jack located machine Manhattan material measured meter method N. Y. City necessary NELSON—HYDRAULIC MACHINERY obtained operation packing PAUL AUDITORIUM pipe piston placed plant Plate Portland cement powdered coal pressure pulverized coal pump railroad record reinforced concrete RIDGE IMPROVEMENT River rivets rock rods sample sand Schoharie Creek shafts shown shows side sidewalk span station steam steel Street subway surface surveys tion tracks traverse trestle trusses tube tunnel valves velocity ventilation vertical weight weir York City