Gas Generators 2012 17 h United States, Houston, Texas
Gas Generators 2022 2,864 h United States, Sergeant Bluff, Iowa
Gas Generators 2022 1,332 h United States, Bondurant, Iowa
Gas Generators 2003 132 h United States, Ephrata, Pennsylvania
Gas Generators 2007 399 h United States, Ephrata, Pennsylvania