Founded in 1923, Rowan Companies is a major international offshore and domestic contract drilling and aviation services provider. Through its subsidiary, LeTourneau, the company also operates a mini-steel mill, a manufacturing facility that produces heavy equipment for the mining, timber and transportation industries, and a drilling products group that has designed or built around one-third of all mobile offshore jack-up drilling rigs. The group’s Era Aviation unit is an international aviation organisation, operating helicopters and fixed-wing aircraft.