Piqua, Ohio Questor Juvenile Furniture) is the leading manufacturer of infant and toddler car seats, and has become one of Piqua's leading employers and industries. In the late 1890s, Southwest Ohio was the heart of the US flaxseed growing area. There were some 13 linseed oil mills in Piqua, where the flaxseed was "crushed" to extract the vegetable oil, named linseed oil. The flax fiber was used to make both cloth and paper. The oil had a variety of industrial uses. "Linoleum" is a manufactured flooring product for which linseed oil is the binder. One of the vegetable oil mills in Piqua
Narva Oil Plant Narva Oil Plant Narva Oil Plant (), a subsidiary of Eesti Energia, is a producer of shale oil from oil shale. It operates a commercial scale shale oil retorting plant, located in Auvere near Narva, Estonia. The oil shale retorting plant (the UTT-3000 refinery) was built in the late 1970s next to the Eesti Power Plant to provide shale oil as a start-up fuel for the power plants. The plant was commissioned in 1980. Since the beginning of the 1990s, the oil plant operated as a part of the Narva Power Plants. In September 2007, the oil plant was separated