This Fortune 50 employee-owned company—whose diverse markets span transportation, oil; gas; and chemical power, building, water, wastewater, and mining—operates through a vast network of offices and projects in the United States, Canada, Mexico, and Australia. With more than 20,000 staff and skilled craft employees, including more than 1,200 engineers, the company has more than 70 years of experience in the mining industry. A global construction, mining, and engineering company with 2017 revenues of $8.7 billion. The company is consistently ranked among the top ten contractors by Engineering News-Record.