sentences:  He joined his father in the family business of John Thomasson and Son at Mill Hill, a cotton mill founded by Sir Robert Peel.In 1837 his father died and Thomasson took on the management of the firm.In 1841 he built the first of three new Mill Hill factories, a bold venture, as the mill was said to be huge, and the cotton industry was then in depression – a fact which was mentioned by the Prime Minister (Sir Robert Peel) in the House of Commons as evidence that persons did not hesitate to employ their capital in the further extension of the cotton trade, notwithstanding its condition.