Pittsburg is a city in Crawford County, Kansas, United States, located in Southeast Kansas near the Missouri state border. It is the most populous city in Crawford County and southeastern Kansas. As of the 2010 census, the city population was 20,233. Pittsburg is the home to Pittsburg State University, founded in 1903 as a normal training institution. Through the years the College became more diversified in its aims and goals, so that it became a multi-purpose institution. It has always had a strong manual and industrial arts program and has trained many of the area's public and private school teachers. In 1879, two miners from Joplin began the first commercial attempts at mining in close proximity of Broadway Street. A relic of the city's coal mining days was the Pittsburg & Midway Coal Company, founded in 1885, and one of the oldest continuously running coal companies in the United States (even though its headquarters moved several years ago to Denver, Colorado after the Kansas mines closed). In September 2007, Chevron which owned the company, merged it with its Molycorp Inc. coal mining division to form Chevron Mining, thus ending the Pittsburg corporate name. Midway referred to a coal camp in eastern Crawford County, Kansas that was "midway" between Baxter Springs, Kansas and Fort Scott, Kansas. Kenneth A. Spencer, whose father was among the founders of the company was to play an important role in Kansas and Missouri philanthropy. Pittsburg was also the most heavily unionized city in Kansas at the beginning of the 20th century. In addition to some coal mining, the economic base of the City now rests on industry. The city has a rich cultural heritage from many Southern and Eastern European mine workers who settled in and around Pittsburg and Southeastern Kansas. It is situated in a once productive coal field. It now relies heavily on education and government-related employment.