The issue of dust explosions has been a hot topic since the early 20th century. In Dust Explosions, a book published by the National Fire Protection Association (NFPA) in 1922, authors David J. Price and Harold H. Brown acknowledge the need for a vacuum that can withstand the rigors of an industrial environment. They state that, despite every precaution to capture dust at the source, small amounts of it "will get out into the atmosphere of the mill and gather on floors, walls, and ledges." In addition, the authors knew that "if there is no accumulation of dust and the plant is perfectly clean, the explosion cannot propagate and the plant will not be destroyed."
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机译：自20世纪初以来，粉尘爆炸问题一直是一个热门话题。在美国国家消防协会（NFPA）在1922年出版的《粉尘爆炸》一书中，作者David J. Price和Harold H. Brown承认需要一种能够承受严酷工业环境的真空。他们指出，尽管采取了一切措施从源头收集灰尘，但仍有少量灰尘“会进入工厂的大气并聚集在地板，墙壁和壁架上”。此外，作者还知道“如果没有灰尘堆积，并且工厂完全干净，爆炸将不会扩散，工厂也不会被破坏。”
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