Before getting underway with its plans for solar, the URA had to remediate the 70-acre site before doing anything with it. An old slag heap leftover from a former steel manufacturing waste dump is ...

PITTSBURGH — A contaminated slag heap in Pittsburgh’s Swisshelm Park neighborhood is a step closer to becoming a solar farm. The property, located adjacent to Frick Park and west of Swisshelm Park ...

The proposed Chicago Bears stadium site in Hammond would be on a giant slag heap, and near hazardous waste sites and an oil refinery.

Most people look at a slag heap as nothing more than a blemish on the landscape, a mountain of waste left over from the making of steel. Tony Kordell, on the other hand, sees opportunity. New ...

Scientists are exploring whether a legacy of the UK’s polluting industrial past, the dozens of slag heaps that dot the country, could chart the way to a cleaner future by slowing climate change. Since ...

ANACONDA — The bulldozer resembled a child’s Tonka toy in juxtaposition with the massive heap of black slag atop which the heavy equipment operator toiled last week.

They were once a symbol of devastation: black conical mountains rising in strange symmetry from the otherwise flat landscape of Nord-Pas-de-Calais, in northern France. Entirely made by humans, these ...