Among the 2007 collection of published articles from the Journal of the Air and Waste Management Association (JAWMA) was one from the University of California, Davis on emissions from stainless- and mild-steel welding. Using new experimental techniques, the group confirmed (approximately) the EPA’s prior AP-42 data for hexavalent chrome, Cr(VI), emissions from stick and gas welding (using ~18% chromium electrodes) to be approximately 0.2 and 0.02 g Cr(VI)/kg of electrode, respectively, and found Cr(VI) to be undetectable during welding of mild steel (with chrome-free electrodes).