his next project, from 1790, was the construction of the glamorganshire canal, where he worked with his father and with thomas sheasby. in 1790 he assisted his father and brother john with a survey for the fledgling neath canal company. the following year he became the engineer for the neath canal, and also became surveyor and engineer for the leominster canal, a position which he held until 1795, simultaneously with his other projects.