In 1993 Ras Laffan Liquefied Natural Gas Company was established as a subsidiary for the operation and maintenance of LNG and Helium production, and also operates as a subsidiary of Qatar Petroleum, based in Doha.[6] The official foundation stone for Qatargas 1 was laid in 1994 and in 1995 another major contract with the Korea Gas Corporation (KOGAS) was signed, guaranteeing the supply of 2.4 million tonnes of LNG per year.