Canvass WhiteDied 18 Dec 1834 at age 44 (born 8 Sep 1790). American civil engineer assisted Benjamin Wrightin the construction of the Erie Canal from 1816. To prepare for building the canal, in late 1817, White travelled extensively in Great Britain visiting canals and learning construction methods. With this experience, on his return, he was Wright's principal assistant. Building locks required a hydraulic cement as mortar between the stones. Because of the high cost to import it from England, White investigated making cement from local limestone. He found rock near the canal route in Madison County was very suitable. He obtained a the first U.S. patent for waterproof cement on 1 Feb 1820. White was consulting engineer for many other canal projects, but retired young due to poor health, and died shortly after at age 44.« |
