 This mill was owned by his father in partnership with a Thomas Mease and operated by Edmund's brothers John and James.However, the Blackets ended the partnership with Mease in July 1837 as they were unhappy about certain financial matters, and by March 1838, the issue was in Chancery.In about 1837, although lacking formal training, Blacket began work for the Stockton and Darlington Railway as a surveyor.