Abstract: A storage method in which fruits and/or vegetables immediately after harv are stored in a storage chamber which maintains controlled storage atmospheres having a total pressure of not lower than 400 Torr and below the atmospheric pressure (760 Torr), an oxygen partial pressure of about 15 to about 145 Torr, a carbon dioxide partial pressure of about 15 to about 115 Torr, a relative humidity of not lower than 90%, and a temperature ranging between 0.degree. and 15.degree. C.

Abstract: An apparatus for cleaning surfaces, particularly both vertical surfaces, of a plug of a coke oven door. The apparatus has a pair of rotary scrapers adapted to be moved up and down in contact with both vertical surfaces of the plug. Each rotary scraper incorporates a screw type cutter for a higher cleaning efficiency. In order to facilitate the precise location of the coke oven door in relation to the scrapers, the cleaning apparatus further has a door holding device adapted to receive the coke oven door at a position in front of the scrapers and to convey the same to the cleaning position. Also, the cleaning apparatus has a scraper cleaning device adapted for fitting the spiral groove of each scraper to move along the latter as the scraper is rotated, thereby to remove tar or the like deposits from the spiral groove of the scraper.