Perilla oil was a critical component in creating durable earthen floors. In Japan, perilla oil was important for fueling oil lamps until early 16th century, before it was overtaken by rapeseed oil. The oilseed contains drying oil elements and was imported in bulk as a substitute for linseed oil into the United States from Japan, until the supply was interrupted by war. In Korea, perilla oil pressed from the untoasted seeds were used to fuel lamps and to oil floor papers. The press cake remaining after pressing perilla oil can be used as natural fertilizer or animal feed. Perilla oil Perilla oil
Picway Power Plant switch while replacing an oil circuit breaker. Picway Power Plant Picway Power Plant was a 220 megawatt (MW) coal power plant located west of Lockbourne in Pickaway County, Ohio. The plant generated electricity from 1926 until its closure in 2015. It was operated by American Electric Power (AEP). Picway began operations in September 1926. The plant was operated by the Columbus Railway Power and Light Company, a forerunner of AEP. The two units had a combined capacity of 60 MW. Construction of Unit 3 was temporarily halted in 1942 by the War Production Board (WPB) as the building of new