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 from the power plants and the separate subsidiary of Eesti Energia was established. The retorting plant consists of two modified Galoter type solid heat carrier retorts (Enefit retort)—both processing 125 tonnes per hour of oil shale. Main products are fuel grade shale oil, raw material for bitumen and antiseptics. The designed annual capacity of the plant is 220,000 tons of shale oil and 60 million cubic meters of retort gas. In May 2009, Eesti Energia announced that it plans to build a new shale oil plant adjacent to the existing plant with processing capacity of 2.26 million tonnes of oil