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Ingersoll drill Co's compressor…
C.V.V. Powers, c. 1883 - in or before 1887
Headhouse shaft No. 25
C.V.V. Powers, c. 1883 - in or before 1887
Ardsley gate house, section no. 7
P. de Luze, c. 1883 - in or before 1887
Excavating shaft No. 26
George P. Hall & Son, c. 1883 - in or before 1887
Driving a heading
Saul Davis, c. 1883 - in or before 1887
Sleepy Hollow Highway Bridge and…
P. de Luze, c. 1883 - in or before 1887
Turning the arch
George P. Hall & Son, c. 1883 - in or before 1887
Shaft no 25, and blowoff drift
C.V.V. Powers, c. 1883 - in or before 1887
Shaft no 22
George P. Hall & Son, c. 1883 - in or before 1887
Driving the heading shaft no 23
Preston K. Yates, c. 1883 - in or before 1887
South Yonkers Gate House looking…
Preston K. Yates, c. 1883 - in or before 1887