Ductile cast iron (cast iron with added magnesium) has been used for manhole covers and frames since the mid-20 th Century due to its durability and high compressive strength. Engineers who design ...

Energy provider Eversource is working to replace the 40,000 or so manhole covers in Massachusetts with safer ones, after several explosions sent people to the hospital with injuries this summer. The ...

Eversource will soon be replacing the approximate 40,000 manhole covers throughout Massachusetts with new latching covers the company says will improve safety. According to WCVB, the company plans to ...

NASHUA – Perhaps the most unusual product ever made by a Nashua company is still going strong, despite efforts to replace it with a more modern version – not to mention the fact that you and your ...