1788, there were about 210 mills in Great Britain. The development of cotton mills was linked to the development of the machinery they contained. By 1774, 30,000 people in Manchester were employed using the domestic system in cotton manufacture. Handloom weaving lingered into the mid-19th century but cotton spinning in mills relying on water power and subsequently steam power using fuel from the Lancashire Coalfield began to develop before 1800. Successful modern first mills The Paul-Wyatt mills The first cotton mills were established in the 1740s to house roller spinning machinery invented by Lewis Paul and John Wyatt. The machines were the first to spin cotton mechanically "without the intervention of human fingers". They were driven by a single non-human power source which allowed the use of larger machinery and made it possible to concentrate production into organised factories. Four mills were set up to house Paul and Wyatt's machinery in the decade following its patent in 1738: the short-lived, animal-powered Upper Priory Cotton Mill in Birmingham in 1741; Marvel's Mill in Northampton operated from 1742 until 1764 and was the first to be powered by a water wheel; Pinsley Mill in Leominster probably opened in 1744 and operated until it burned down in 1754; and a second mill in Birmingham set up by Samuel Touchet in 1744, about which little is known, but which was sufficiently successful for Touchet later to seek the lease on the mill in Northampton. The Paul-Wyatt mills spun cotton for several decades but were not very profitable, becoming the ancestors of the cotton mills that followed. Arkwright-type mills Richard Arkwright obtained a patent for his water frame spinning machinery in 1769. Although its technology was similar to that of Lewis Paul, John Wyatt, James Hargreaves and Thomas Highs, Arkwright's powers of organisation, business acumen and ambition established the cotton mill as a successful business model and revolutionary example of the factory system. Arkwright's first mill – powered by horses in Nottingham in 1768 – was similar to Paul and Wyatt's first Birmingham mill although by 1772 it had expanded to four storeys and employed 300 workers. In 1771, while the Nottingham mill was at an experimental stage, Arkwright and his partners started work on Cromford Mill in Derbyshire, which "was to prove a major turning point in the history of the factory system". It resembled the Paul-Wyatt water-powered mill at Northampton in many respects,