Complex sentence: Robert was also the engineer for the Hagger Leases branch, planned to serve collieries at Butterknowle and Copley Bent, and stayed in London for five weeks as the engineering authority while the bill passed through the parliamentary process, and Assent was given in May 1824.
Split into simpler sentences: Robert was also the engineer for the Hagger Leases branch, planned to serve collieries at Butterknowle and Copley Bent. He stayed in London for five weeks as the engineering authority while the bill passed through the parliamentary process, and Assent was given in May 1824.