Mining history of Sardinia
The general claim to Nieddu and Durante
The arrival of the Savoy Dinasty in 1718 represented a new impulse to the Sardinian mining after the nearly total lack of interest of the Spanish rulers.
At first the Savoy government decided upon a general claim: this granted to single claimer all the mines in the island for a set period. The first general claim, from 1720 to 1740, was obtained by Pietro Nieddu and Giovanni Stefano Durante, two small businessman from Cagliari. They worked mainly in Monteponi, near Iglesias, and in Montevecchio, near Guspini. Then they widened their activity to the Fluminese and Masua.
After twenty years Nieddu and Durante produced only approximately two hundred kilos of silver.