Power is generated from heavy fuel oil supplied by the Indeni Petroleum refinery. The community is home to a major Shell petroleum refinery. One tunnel was used as a petroleum refinery. The first unit operation in a petroleum refinery is the crude oil distillation unit. Other mineral exports included petroleum refinery products and alumina. In 1992, he was the managing director of the Liberia Petroleum Refinery Company (LPRC). A petroleum refinery includes many unit operations and unit processes. Agoco also has a portable petroleum refinery or topping plant at Sarir. A public sector petroleum refinery (MRPL) was established in the 1990s. A petroleum refinery named Numaligarh Refinery Limited Limited has been established in 2001. Petrojam, Jamaica's national and only petroleum refinery, is co-owned by the Government of Venezuela. In 1874, the Los Angeles Petroleum Refinery Company built an oil refinery at Lyons Station. The Chevron Richmond Refinery is a petroleum refinery in Richmond, California, on San Francisco Bay.