Aughinish Alumina’s extraction plant in Limerick sits on a 1,000-acre site on Aughinish island. It employs more than 400 people, is the largest of its kind in Europe, and accounts for approximately one third of the total alumina production in western Europe. In 2020, it had revenues of $525 million. Despite a loss-making year in 2020, the business was still sitting on $300 million accumulated profits, according to its latest accounts. It is a vitally important part of the local economy, providing sustainable employment in an area of the country with a high unemployment rate. However, the plant’s largest ultimate…