In 1793, the Seine Fishery here began to expand in association with Fish Cellars and Merchant businesses at Newlyn and Penzance. A change was seen in the Cove with the construction of a number of large Fish Cellars for processing the fish catch. In 1809, local newspapers carried an advertisement ""... auction sale of the Mullion Pilchard and Herring Fishery, carried on at Mullion and Newlyn, including a New- Built Cellar capable of curing over twelve hundred hogsheads of fish enclosing an excellent salt cellar, commodious Lofts and a pump well supplied with water. Also included in the auction are 5 Stop seines, 2 Tuck Seines, with Boats, tackle and materials"". The entrance to the Cove was also widened to incorporate more boats with the removal of rocks.