11. Richard B. Mellon

Richard B. Mellon was a prominent banker and industrialist who significantly influenced Pittsburgh’s steel and finance sectors. As president of the Pittsburgh Reduction Company, later known as Alcoa, he played a pivotal role in the aluminum industry’s growth. Mellon also held substantial investments in the Pittsburgh Coal Company, where he engaged in labor disputes, notably with John L. Lewis and the United Mine Workers. His business practices often prioritized profit over fair labor conditions and competition (en.wikipedia.org).