The presence of toxic copper also indicates a thriving tool-making industry. Moreover, the new research reveals that industrial pollution has a deeper history than is typically recognized.

A Marquette tour guide tells us about copper mining in the Upper Peninsula — which dates back 7,000 years at the Porcupine Mountains and Keweenaw Peninsula.

Ancient Egyptians used so much copper, they polluted the harbor near ... the harbor was essential for transporting materials and was the site of a major copper toolmaking industry. These tools, ...

But, “we see in Timna, that at least before the Roman period and probably even after the Roman period, these ancient copper industries were not that polluting,” he said.

Evidence of late chalcolithic period copper mining was found during an archaeological dig carried out this summer near the Paphos district village of Makounta. An archaeological team made up of ...