"Heat treatment technology begins with a genius ... optically stimulated luminescence dating, experimental stone tool production, mechanical testing, and field archaeology.

Humans living in South Africa in the Middle Stone Age used advanced heating ... all subsequent stages of silcrete tool production and use. Heat treatment: a major asset The authors suggest that ...

CURTIS MAREAN: And that's suggestive of controlled stone tool heat treatment - suggestive but not conclusive. KELLY: Curtis Marean of Arizona State University - he was not involved in this work ...

Such adaptations may have given the first modern humans to leave Africa the tools and know-how to conquer the world. Heat treatment occurred to Brown – who sculpts stone tools in his field ...

A team from South Africa found that cave men roasted stone using 'heat treatment' to change its properties - like prehistoric engineers. The revelation explains how the advanced tools of the time ...

The Variety of Heat Treatment Processes Available for Tool Steels The variety of heat treatment equipment suitable for tool steel includes vacuum furnaces, fluidised bed furnaces, sealed quench ...

Sri Lanka has made many great strides in the gem business following the acquiring of knowledge in transforming Geuda (semi-precious stones) into high value precious stones such as Blue Sapphires, ...