The union representing operators of heavy equipment began a strike Tuesday against three construction material producers, a job action that could snag road work and other projects in the region.
Local 150 of the International Union of Operating Engineers called the strike against Lehigh Hanson, Vulcan Materials and Lafarge Holcim. The union said the companies collectively operate 35 quarries and other locations in Northern Illinois. They produce sand, gravel and crushed stone essential for asphalt, concrete and other construction material.
