http://www.onlinebiographies.info/ny/cayu/sterling-ny-bios.htm

(In 1871 John and Thomas Hunter)...took a contract to grade a portion of the road bed of the Southern Central Railroad. They also contracted for the grading, masonry and bridge building of five miles of the Lake Ontario Shore Railroad. In 1872, they built about the same distance. In 1873, they contracted with the N. Y. C. & H. R. R. R. Company, for grading and masonry for the third and fourth tracks of that line between Syracuse and Clyde, a distance of thirty-five miles. In 1874, they built the R. &. W. R. R., from Ontario to Charlotte, entire distance eighteen miles. In 1875 and 1876, they built on the same road from Kendall to Lewiston, sixty-five miles. The same year they built the substructure of the railroad bridge over the Oswego river. In 1877, they did the track laying and ballasting of the Syracuse, Geneva & Corning Railroad. In September, 1877, they took the contract for the enlargement of sections 27 and 35 of the Welland Ship Canal in Canada, which includes the building of the aqueduct across the Chippewa River and the lift lock from the river to the canal, also the guard lock at the Lake Erie end.