One of Seattle’s oldest businesses is also one of its biggest polluters. For anyone crossing the Duwamish River on the West Seattle bridge, the Ash Grove Cement plant is hard to miss. Its pair of ...

Almost two years after a controversial cement plant near Lyons was shut down, manufacturing at the Cemex plant may start back ...

Heidelberg Materials is betting it can profit from an expensive process that will reduce the carbon dioxide emitted from one of the world’s most polluting industries. By Stanley Reed Reporting from ...