Tanks at the oil refinery operated by Eastham Refinery Limited, a joint operation between Nynas and Shell. The site operates a distillation unit established in 1966 and designed to run on heavy naphthenic crude. In 1989 the unit was expanded to provide a capacity of 1.2m tonnes per year. The main product is bitumen, both penetration and blown grades, and a range of distillates is also produced. These find outlets as gas oil, marine diesel, lubricating base stocks and in a broad spectrum of process industries. A separate blown bitumen unit completed in early 1990 provides additional capacity. It is the largest producer of bitumen in the United Kingdom with a capacity of 800,000 tonnes per year.