revealing East Asia's first-ever evidence of the "heat-treated stone-tool" kiln dating back from 18,000 to 15,000 years ago, or the Paleolithic period, reported Hebei Daily on Monday. Wang Fagang ...

For example, an enclosure from the Iron Age was later used by the Romans to build a large lime kiln, according to the release. It was built strategically on the western slope of a hill to catch ...