The issue of dust explosions has been a hot topic since the early 20th century. In a book published by the NFPA in 1922, titled Dust Explosions, the authors, David J. Price and Harold H. Brown, acknowledge the need for a vacuum that can withstand the rigors of an industrial environment stating 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." The authors of the book knew then, as it still stands today, "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NFPA于1922年出版的一本名为《粉尘爆炸》的书中，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，该真空指出尽管采取了各种预防措施来捕集灰尘从源头上讲，少量的“会进入磨房的气氛，并聚集在地板，墙壁和壁架上”。当时，这本书的作者知道，“直到今天，尘埃不积聚，并且植物完全干净，爆炸不会扩散，植物也不会被破坏。”
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