In the 19th century,
coal,
tinplate and
pottery were exported from Baglan Pill. In 1963
BP (trading as British Hydrocarbon Chemicals, Ltd.) opened
petrochemical plants at Baglan Bay, partly to benefit from the proximity of the BP
oil refinery at
Llandarcy, which could supply feedstocks. The plants produced 125,000 tons of petrochemicals during the first year of operation. The main products were
ethylene (50-60,000 tons a year),
ethylene dichloride (64,000 tons),
propylene,
butadiene (5000 tons), and
isobutylene. Several other companies built chemical plants at Baglan Bay. Forth Chemicals (a joint subsidiary of
Monsanto and BHC), had a styrene monomer plant within the BHC site. The petrochemicals complex produced alcohols,
styrene, olefins, and
benzene from the mid-1960s, and
vinyl chloride monomer and
polyvinyl chloride (PVC) from the early 1970s. By 1968, BP Baglan Bay was one of the largest petrochemical sites in
Europe, employing 2500 workers at its peak in 1974. Other companies with plants at Baglan Bay included W. R. Grace (polybutenes) and Pfizer. However,
market changes led to the gradual closure of the facility between 1994 and 2004. There were concerns about the incidence of cancer and mortality near the Baglan Bay petrochemical works. ==Baglan Energy Park==