Vermont Castings invests $10 million in improvements

John Leppo, of ACT Robots, fine tunes the programming of a robotic arm recently installed at the Vermont Castings foundry in Randolph. Photo by James M. Patterson/Valley News
This article by John Lippman was published in the Valley News on June 16.
RANDOLPH — Not long ago, there used to be a lot of soot inside the Vermont Castings foundry, where workers would come off shifts coated in black, looking as if they had just emerged from a coal mine.
But carbon particles don’t mix well wit