Complex sentence: In 1915, Alfred L. Jaros, Jr. and Albert L. Baum were recent graduates of Columbia University's engineering program and interns at prominent New York City mechanical engineering firm Nygren, Tenney & Ohmes when they decided to open their own company, Jaros and Baum.
Split into simpler sentences: In 1915, Alfred L. Jaros, Jr. and Albert L. Baum were recent graduates of Columbia University's engineering program. While interning at prominent New York City mechanical engineering firm Nygren, Tenney & Ohmes, they decided to open their own company, Jaros and Baum.