Richard J. Lewis is a prominent figure in the field of chemistry, particularly known for his work in chemical safety and hazard assessment. He has contributed significantly to the development of various resources that help professionals understand the risks associated with chemical substances. His expertise is often sought in regulatory and educational contexts. In addition to his research, Lewis is recognized for his role in creating the NLM (National Library of Medicine) database, which provides valuable information on chemical safety. His efforts have greatly enhanced the accessibility of crucial data for scientists, educators, and safety professionals worldwide.