Barber-Nichols (BN) is located in Arvada, Colorado, a suburb of Denver. It was founded in 1966 by Bob Barber and Ken Nichols. BN specializes in the engineering design and production of turbomachinery; custom products include compressors, fans, pumps, turbines, generators, motors, and controllers for aerospace, cryogenic, defense, and energy applications. In addition to specialty hardware, BN also provides engineering consulting and contract manufacturing.