Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 136,204 pages of information and 218,941 images on early companies, their products and the people who designed and built them.
Thomas Machin (March 20, 1744 – April 3, 1816) was a British-born soldier and construction engineer in America.
Machin was born in Staffordshire, and in his youth was apprenticed to English canal builder James Brindley.
For much more, see Wikipedia entry
For an interesting sideline on Machin's 'defensive chain' at West Point see 'The Great Chain Hoax'