his next major project was the brecknock and abergavenny canal. when he first surveyed the line, it was to run from the glangrwyney ironworks near gilwern to the river usk at newbridge, near caerleon, but the northern terminus was then extended to brecon, and negotiations with the monmouthshire canal resulted in a revised line, with the two canals joining at pontymoile. a bill was presented to parliament in january 1793, but after its second reading, the monmouthshire canal succeeded in making an amendment, for a somewhat different route which had been surveyed by his brother thomas.