Fuel were present at the sites. As a fuel, wood has remained in use up until the present day, although it has been superseded for many purposes by other sources. Wood has an energy density of 10–20 MJ/kg. Recently biofuels have been developed for use in automotive transport (for example Bioethanol and Biodiesel), but there is widespread public debate about how carbon efficient these fuels are. Fossil fuels are hydrocarbons, primarily coal and petroleum (liquid petroleum or natural gas), formed from the fossilized remains of ancient plants and animals by exposure to high heat and pressure in the absence of oxygen
Pakistan Nuclear Power Fuel Complex late 2010. Cost of the Pakistan Nuclear Power Fuel Complex (PNPFC) was originally estimated at Rs. 51.298 billion. The complex will fabricate fuel for local nuclear power plants, in particular for the reactors at Chashma Nuclear Power Plant. The Nuclear Power Fuel Facility comprises Chemical Processing Plants, Nuclear reprocessing plant, an Enrichment Plant, a Seamless Tube Plant; a Fuel Fabrication Plant; and a Nuclear Fuel Testing Facility. For information on Pakistani nuclear power reactors, see the articles Chashma Nuclear Power Plant and Karachi Nuclear Power Plant. Pakistan Nuclear Power Fuel Complex The Pakistan Nuclear Power Fuel Complex (PNPFC), also known