 Harvey's fleet of 79 ships built at Hayle including the 4000 ton SS "Ramleh" in 1891; the largest ship to be built in Cornwall.The two rival companies were responsible for the development of Hayle into a major industrial port in the 18th and 19th-centuries, servicing the tin and copper mining industry of West Cornwall.About 1811, Sea Lane (or Black Road) was built across Copperhouse Creek to further improve access between the works at Copperhouse and the company's main shipping facilities at North Quay.