ISBN: | 978-5-5106-3914-8 |
High Quality Content by WIKIPEDIA articles! The economy of Pittsburgh, Pennsylvania is diversified, focused on services, medicine, higher education, tourism, banking, corporate headquarters and high technology. Once the center of the American steel industry, and still known as "The Steel City," today the city of Pittsburgh has no steel mills within its limits, though Pittsburgh-based companies such as US Steel and Allegheny Technologies own several working mills in the Greater Pittsburgh area.