Certificate of Engineering from State of Tennessee awarded to James A. Parsons

James A. Parsons Jr. was a scientist, inventor, and university professor, whose research with rust resistant metals and iron alloys is credited with leading to the development of stainless steel. He developed Durimet 20, a corrosion-resistant stainless steel alloy also known as Alloy 20, which is still widely used today in a diverse range of industries including petrochemical, textile, nuclear, aerospace, automotive, pharmaceutical, textile and chemical and food processing.