1959 maximum annual shale oil production increased to 780,000 tonnes. From 1965 oil shale usage in Fushun started to decline with the discovery of Da Qing oil field in the 1960s. Sinopec, a shale oil producer during those times, shut down its oil shale operations in the beginning of the 1990s. At the same time, the Fushun Oil Shale Retorting Plant was established as a part of the Fushun Mining Group. It started production in 1992. In the same year, the China National Oil Shale Association was established in Fushun. At the end of 2006, the Fushun Mining Group operated the largest shale oil plant in the world, consisting of seven retorting units with 20 retorts in each unit, for a total 140 sets of Fushun type retorts. There are also two oil refineries. Fushun Petrochemical Company, a subsidiary of PetroChina, is building a refining and petrochemical complex in Fushun. Transportation Fushun is located from Shenyang Taoxian airport. Railways and highways connect the city to Shenyang and Jilin Province. The seaports of Dalian and Yingkou are also nearby, away respectively, with good highway connections. Education The highest-ranked institution of higher education is the Liaoning University of Petroleum and Chemical Technology, ranked 123rd in China overall. Fushun No.1 High School and Fushun No.2 High School are major high schools in Fushun. The 44 middle school is located in the second street, Xin Fu District. Location is close to FuShun's CBD. Transport is very convenient. All students come from this community. Because of the population's decline in current years there are not many students compared to 10 years ago. There were over 1000 students in the 1990S, while now around 200 students. Although the number of students has dropped, the quality of education, the advanced learning facilities and modern school are still evident. There are indoors gymnasium, big dance and musical instrument rooms. The play yard is all about synthetic surface track. The 44 middle school is actually changed in term of their learning and teaching's facilities, equipment and school's building. It represents new outlooks regarding middle-level education in a third-line city in China. Tourism Fushun has high mountains and thick woods. Houshi National Forest Park, about from Fushun city centre, is rated by the central government as an AAAA tourist attraction. Saer Hu Scenic Area covers some . It includes the Dahuofang Reservoir, the largest man-made lake in northeast China. There