As late as 1987, long trains of coal wagons drawn by a noisy diesel engine slowly made their way along the New Cut to the coal yard at the back of M-Shed. This was the last use of privately run industrial trains for local delivery work, a practice that dated back locally long before the big passenger lines were built in the 1840s. Bristol's first railway was the Avon & Gloucestershire Railway, which opened as a horse-drawn 'dramway' in 1832 and then closed in the late 1860s. Another dramway, the Bristol & Gloucestershire Railway, was built to move coal from Coalpit Heath to Bristol harbour and opened in 1835. It was quickly converted to locomotive use and became part of the Midland Railway. The Bristol Harbour Railway was built in 1872 as a goods line of the Great Western Railway. It travelled from the goods yard at Temple Meads to Princes Wharf and was later extended onto Wapping Wharf. In 1906, the Harbour Railway Extension was added and included a major new goods yard at Canon's Marsh, which now houses Explore @t Bristol.