Carrie Jane Everson, a pioneering American metallurgist and inventor, made groundbreaking discoveries in ore extraction using froth flotation. Despite facing challenges due to her gender, she earned two U.S. patents and tested her innovative process in various locations. Although she did not renew her patents and faced gender bias, Everson’s contributions had a lasting impact on the field of metallurgy. She passed away in 1914, leaving a legacy of scientific accomplishments.