Computed tomography is now doing for ancient metalworking what it once did for medicine, turning opaque fragments of slag into detailed cross-sections of early technology. By peering inside 5,000-year ...

Sometimes, clues about ancient technology are hidden in the most mundane things. In this case, Tel-Aviv University archaeologist Erez Ben-Yosef and his colleagues went rummaging through heaps of slag, ...

DEADWOOD – Part of a slag heap left from gold-mining operations 100 years ago has tumbled into Whitewood Creek, filling the creek bed with cinder-like debris about 20 feet high and 40 feet wide. The ...

Copper smelting, a critical process in metal production, often leads to the generation of slag containing valuable metals. Traditionally, this slag has been discarded, causing environmental issues and ...