Mostyn Quay saw a remarkable concentration of industry in one small area ? there was a colliery, iron works, copper works, saw mill and an oil works ? all served by rail and with access to seaborne transport. Sailing Directions dating to 1870 noted large quantities of coal from the pits were being shipped from the open dock which offered considerable accommodation. Alongside the open dock, the quays were connected by a straight cut across the foreshore to the Dee channel, where there was a black warping buoy a little to the south of the entrance to assist vessel to make the sharp turn. In 1868, there were 278 vessels inwards and outward, 581 requiring customs clearance. Tipping on the foreshore of slag, colliery and other waste over many years created a large area reclaimed from the Dee estuary upon which the modern Port of Mostyn was constructed. The Port is now a recognised centre for offshore windfarm construction, allowing for the stacking and shipping of components for this industry.

Sources include:
Admiralty, 1870, Sailing Directions for the West Coast of England from Milford Haven to the Mull of Galloway including the Isle of Man, pg124

RCAHMW, September 2014