John Smeaton was the engineer employed by the Birmingham and Fazeley, but work did not start immediately, as he was also responsible for the Riders Green to Broadwaters line, which was completed first. The project did not go smoothly, as there were disputes between James Bough, the superintendent of the canal company, and Pinkertons, who were the civil engineering contractors employed to carry out the work. The issue concerned the cement that the Pinkertons were using. Work on the Fazeley line began in April 1786, with Bough still acting as superintendent, and the Pinkertons responsible for the construction of the section between Minworth and Fazeley. In late 1786, George Pinkerton found out that the levels, which had been surveyed by Bough, were wrong. Samuel Bull, the engineer for the canal company, investigated and reported that Pinkerton was right. The Pinkertons started to work on the project from January 1787, even though the contracts were not signed until May. Bough made a series of allegations that Pinkertons' workmanship and the materials used were of poor quality.