HistorySpark arresters have been used in the United States since the early 1800s when screens were placed on the stacks of Jupiter locomotives, which were notorious for starting fires. The first legislation requiring spark arresters was passed in 1905 and applied to engines and boilers operated in, through, or near forest-, brush-, or grass-covered lands.The United States Department of Agriculture (USDA) Forest Service effort in combating equipment-related fires started in the 1920s with external combustion engines (steam donkeys) used in logging.In the early 1950s, the USDA Forest Service became interested in reducing the number of fires caused by internal combustion powered logging equipment. This effort was based on the 1934 report by J.P. Fairbanks and Roy Bainer entitled “Spark Arresters for Motorized Equipment,” published by the University of California at Berkeley. The research demonstrated that exhaust particles with a diameter of 0.023 in or larger were responsible for the maj