jan 1, 3500 BC - Lead
Description:
-Lead minerals extracted in a stone furnace
-Discovered in the Stone age
The Stone Age was a prehistoric period during which stone was widely used to make weaponry and other tools. The period lasted roughly 3.4 million years and ended between 8700 BCE and 2000 BC.
-Lead is used for:
-Lead is still widely used for car batteries -pigments ammunition
-cable sheathing,
-weights for lifting,
- Lead is often used to store corrosive liquids.
Lead has to be extracted, smelted and refined to be pure. The extraction happens chemically.
Added to timeline:
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Date:
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