The site was developed in the 1950s by the Associated Octel Co. Ltd as a facility to produce bromine from sea water. Operators ceased in around 2004. The majority of the former facility has been demolished to slab level, leaving large areas of concrete hardstanding, tarmacadam internal roads and surface pipework conduits. A number of heavy structures remain in part, including canteen, workshops, pump house, blowing out tower and water storage tower. A sports ground and adjacent amenity land lie at the southern end of the site. Access is from Craig Y Don which connects with Parys Road and Machine Street and the town centre to the south. The site extends along the length of a former railway line for approximately 0.69 miles to the south and through the town. The site stands adjacent to the coastline to the north, with undeveloped land to the west. To the east is undulating undeveloped land adjacent to Amlwch Port. A residential estate and the town lies to the south. The Afon Goch river runs through the site west to east and discharges into the sea at Porth Offeiriad.