stone drill การใช้

• Their tools included awls, adze bits, knives, scrapers, stone drills, whetstones.
• Also recovered was a stone drill and a burned bone, a potentially precious clue about what kind of game was hunted.
• Also found were a stone drill and burned bone, which may reveal what game was hunted by the region's earliest inhabitants.
• Mehrharn Period II-5500 to 4800 BC, was a ceramic settlement that showed strong evidence of having manufacturing activity such as copper and stone drills and more technological kilns.