Upon his arrival in York, Simcoe was keenly aware of the need for a lumber mill and grist mill in the area. He had constructed a sawmill on the west bank of the river near present-day Bloor Street in 1793, which was operated by John Wilson. In 1797 Simcoe managed to get a grist mill established on the Humber River. It was owned and operated by John Lawrence. Over the years, numerous mills have been operated along the river by such men as William Cooper, W. P. Howland, Thomas Fisher, John Scarlett, William Gamble and Joseph Rowntree. The last grist mill on the Humber, Hayhoe Mills in Woodbridge, closed in 2007.