thumb|right|300px|The foundations of the 1775 Cromford Mill which was destroyed by fire in 1890, with wheel chamber on the right. Richard Arkwright junior was uninterested in the cotton business, and after the death of his father the Arkwright family ceased to invest in the industry. The Strutt family continued to invest, fuelled by the profits of their mills in Milford and Belper. They continued building mills into the 1810s, and by 1833 their business employed 2,000 people and had dominated the cotton industry in the Derwent Valley.Derwent Valley Mills Partnership (2000), pp. 102–104. As Arkwright had done at Cromford, the Strutts provided housing for their employees. Belper was already an established village with its own market before Jedediah Strutt began building mills, so he was not required to have as active a role in developing the community into a self-sustaining entity as Richard Arkwright did at Cromford.Derwent Valley Mills Partnership (2000), p. 103. The Strutts provided education, and in 1817 650 and 300 children attended Sunday Schools in Belper and Milford respectively.Derwent Valley Mills Partnership (2000), p. 105. Compared with Cromford, whose population had plateaued at around 1,200 in the early 19th century, the population of Belper rose from 4,500 in 1801 to 7,890 in 1831 due to the prosperity of the business.Derwent Valley Mills Partnership (2000), pp. 100–104. Darley Abbey also expanded as a worker's settlement although it had no market place, so providing food for the inhabitants was problematic. The settlement doubled in size between 1788 and 1801, and between 1801 and 1831 the population increased from 615 to 1,170 with the addition of much worker's housing. A Sunday School for 80 children was established in one of the mills and a church and school were built in 1819 and 1826 respectively.Derwent Valley Mills Partnership (2000), p. 110.
thumb|right|300px|The foundations of the 1775 Cromford Mill which was destroyed by fire in 1890, with wheel chamber on the right. Richard Arkwright junior was uninterested in the cotton business, and after the death of his father the Arkwright family ceased to invest in the industry. The Strutt family continued to invest, fuelled by the profits of their mills in Milford and Belper. They continued building mills into the 1810s, and by 1833 their business employed 2,000 people and had dominated the cotton industry in the Derwent Valley.Derwent Valley Mills Partnership (2000), pp. 102–104 As Arkwright had done at Cromford, the Strutts provided housing for their employees. Belper was already an established village with its own market before Jedediah Strutt began building mills, so he was not required to have as active a role in developing the community into a self-sustaining entity as Richard Arkwright did at Cromford.Derwent Valley Mills Partnership (2000), p. 103. The Strutts provided education, .and in 1817 650 and 300 children attended Sunday Schools in Belper and Milford respectively.Derwent Valley Mills Partnership (2000), p. 105. Compared with Cromford, whose population had plateaued at around 1,200 in the early 19th century, the population of Belper rose from 4,500 in 1801 to 7,890 in 1831 due to the prosperity of the business.Derwent Valley Mills Partnership (2000), pp. 100–104. Darley Abbey also expanded as a worker's settlement although it had no market place, so providing food for the inhabitants was problematic. The settlement doubled in size between 1788 and 1801, and between 1801 and 1831 the population increased from 615 to 1,170 with the addition of much worker's housing. A Sunday School for 80 children was established in one of the mills and a church and school were built in 1819 and 1826 respectively.Derwent Valley Mills Partnership (2000), p. 110.