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Ice cutting was a winter occupation of icemen whose task it was to collect surface ice from lakes and rivers for storage in ice houses and sale as a pre-refrigeration cooling method. Kept insulated, the ice was preserved for all-year delivery to residential and commercial customers with ice boxes for cold food storage. Ice harvesting generally involved waiting until approximately a foot of ice had built up on the water surface in the winter. The ice would then be cut with either a handsaw or a powered saw blade into long continuous strips and then cut into large individual blocks for transport by wagon back to the icehouse.〔Jones, J. C. (1984) ''America's Icemen: An Illustrative History of the United States Natural Ice Industry 1665-1925''. Jobeco Books, Humble, Texas. ISBN 978-0-9607572-1-3〕 Because snow on top of the ice slows freezing, it could be scraped off and piled in windrows. Alternatively, if the temperature is cold enough, a snowy surface could be flooded to produce a thicker layer of ice. A large operation would have a crew of 75 and cut 1500 tons daily. This occupation generally became obsolete with the development of mechanical refrigeration and air conditioning technology. Ice cutting is still in use today for ice and snow sculpture events. A swing saw is used to get ice out of a river for the Harbin International Ice and Snow Sculpture Festival each year. A swing saw is also used to cut ice out from the frozen surface of the Songhua River. Many ice sculptures are made from the ice harvested this way. ==See also== * Frederick Tudor * Nathaniel Jarvis Wyeth * Ice trade * Ice harvesting * Ice hotel * Ice palace 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ice cutting」の詳細全文を読む スポンサード リンク
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