Kent is geologically rich in chalk, which is not found in many other places in Europe in such abundance. This led to the development associated industries: water transport, paper, and cement; all of which continue today in the area. Brickmaking In 1870, up to 2,628 men were working in the brick and tile industry, this is compared to Staffordshire (the next largest brick manufacturing area) that had only 1,566 men working in the industry. Brickmaking continued in the town well into the mid twentieth century. The bricks for the London Bridge – Greenwich Railway Viaduct were all made at Sittingbourne and transported to the site by barge. Bargebuilding & water transport Barges were needed to move many other raw materials and finished goods into the Thames and to London and beyond. Sittingbourne was ideally suited for this purpose and a successful barge-building industry developed at Milton Creek. Sittingbourne developed into a port during the industrial revolution, from which Kentish produce was transported to the London markets. During this era over 500 types of barges are believed to have been built, centred around Conyer, a Roman hamlet of the village of Teynham, found at the head of a small creek between Sittingbourne and Faversham. After World War II, these activities began to fall into a decline, so that only the Burley yard continued with the repair of barges until about 1965. Charles Burley was a brick maker and barge owner who occupied the yard in Crown Quay Lane, which is now occupied by a builders' merchant. This lack of barge repairs led the creek to become silted and derelict. In 1968, the site was owned by Bourncrete Limited, manufacturers of concrete products. The yard was then leased to the newly established Dolphin Sailing Barge Museum Trust. The inlet alongside the Museum usually contains at least one vessel brought to the yard for restoration, including the famous sailing barge Cambria. The town's links with water transport survive today, through a bronze statue of a bargeman in the town centre. The Dolphin Sailing Barge Museum was destroyed by arson in 2008. The museum is now awaiting relocation to a new site Plans to move to Whitstable Harbour were refused in 2013. Paper Paper mills and brickfields were fed by barges that brought in sand, mud and household waste such as cinders for brick making, and took away the finished product on the return