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Tokens — metals

InventTable — TOKENS ERA — Materials, metals

InventionDescriptionYearInventorCountry
Elemental copper artifacts pre-smelting metallurgy 8700 BCE Northern Iraq
Metal chisel copper 7500 BCE Middle East
Tin smelting furnace required 6500 BCE Turkey
Copper smelting more advanced furnace 5000 BCE Serbia
Lost wax casting metal replaces melted wax 4000 BCE Israel, Indus River
Forging advanced furnace 4000 BCE Sumer, Mesopotamia
Metal rivet metallurgy 4000 BCE Sumer, Mesopotamia (90)

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Leo Dean Jansen

Leo Dean Jansen, MD is a retired orthopedic surgeon with a special interest in the history of technology.  This web page is the culmination of  his efforts to define and organize the history of technology as seen through 2000 inventions.  TECHNOLOGY:  TABLE, TRUTHS, TIMELINE, TOP 100 represents the 4 parts of this project.

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