The Sintashta economy came to revolve around copper metallurgy.
The Stone Age cultures ranged from early human groups with primitive tools to advanced agricultural societies, which used sophisticated stone tools, built fortified settlements and developed copper metallurgy.
Evidence for onsite copper metallurgy at Lamanai consists of ingots, pigs, blanks, sheet pieces, mis-cast objects, and casting debris.
Though not conventionally considered part of the Chalcolithic or "Copper Age", the Vinča culture provides the earliest known example of copper metallurgy.
Discoveries in Agadez region of the Niger show signs of copper metallurgy as early as 2000 BC.
It appeared not to fully develop yet, fully developed copper metallurgy would have indicated that it would have external origins.
Precolonial copper metallurgy: sociopolitical context.
There is evidence that the Boian culture acquired the technology for copper metallurgy; as a result, this culture bridged the change from the Neolithic to the Copper Age.
For several centuries, people throughout the region developed new technologies like wheel-thrown pottery and copper metallurgy.
The history of copper metallurgy is thought to have followed the following sequence: 1) cold working of native copper, 2) annealing, 3) smelting, and 4) the lost wax method.