Archaeologists Discover Early Blade Production Evidence For Cutting Tools & Battle Weapons Aged 400,000 Years Old!: The Product of a Sophisticated "Production Line."

""researchers at Tel Aviv University have uncovered evidence which shows that "modern" blade production was also an element of Amudian industry during the late Lower Paleolithic period, 200,000-400,000 years ago as part of the Acheulo-Yabrudian cultural complex""

http://www.physorg.com/news/2011-10-archaeologists-blade-production-earlier-thought.html