It is sometimes described as an eneolithic culture, due to its use of primitive copper tools.

Some copper tools and ornaments have been excavated there.

Copper may be the oldest metal in use, as very old copper tools have been found.

The researchers also uncovered cold-hammered copper tools, including small pins and hooks.

This work was probably made with pointed copper tools.

Ancient copper tools, he says, leave softer incisions than modern steel chisels.

People learned to make this into copper tools and other things, although, for a metal, it is quite soft.

Number of hoards found at this site included silver bangle,copper tools etc.

You saw a group of frightened people dressed in fur and carrying copper tools, right?

Only a few out of each burial were interred with copper tools as grave goods.