The success of the Vanstone Mill, fueled by the machinery of the Crown's land grant program, led to the rapid expansion of the Bowmanville settlement in the early years of the 19th century. Under the generous yet discriminate eyes of wealthy local merchants such as John Simpson and Charles Bowman, small properties would often be sold to promote settlement and small business. The town soon developed a balanced economy; all the while gradually establishing itself as a moderate player in shipping, rail transport, metal works and common minor business (including tanneries, liveries, stables and everyday mercantile commodity exchange).