Bruce Grewcock is chairman and chief executive officer of Peter Kiewit Sons’, Inc., a privately-owned company. Grewcock started his career in 1982 as chief engineer at Black Butte coal mine in Wyoming. In 1994 he was elected to board of directors and assumed the role of chief executive officer in 2005. Kiewit is one of the largest construction and engineering organizations in North America with revenues of more than $9 billion. It provides services across a variety of markets including building, mining, oil, gas and chemical, power, transportation, industrial and water.