Across the nation, 167 industrial facilities currently store and use hydrogen fluoride, a dangerous and highly toxic gas, in their manufacturing processes. In the past 15 years, 129 incidents have occurred, causing 100 injuries and five deaths, a high accident rate given the number of facilities. Many of these facilities are located in densely populated areas, and a release of hydrogen fluoride could put millions in danger. However, safer alternatives to this toxic chemical are available. Find out if you live near one of these facilities with a new map by the Center for Effective Government.