Major iron-producing region for north-eastern Nigeria (17th to early 20th century)

Valle delle Ferriere inland from Amalfi. Iron ore was shipped into Amalfi from Puglia and Elba. "There are many small streams which in places drop over impressive waterfails; these streams provided the power for the early paper and iron industries, the remains of which are widespread" (AB eval)

The fourth complex, an iron-smelting hut, was built into the brook bank, closer to the shore. This open-ended hut sheltered a small stone-and-clay furnace where iron was smelted from small deposits of ore found in bogs.
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"A designated industrial area lies just outside the northern wall of the main enclosure. Here iron smelting and working took place, as indicated by the presence of a furnace area containing smooth stones that could have acquired that texture as a result of being used as anvils. Pieces of tuyere litter the area and there is also a mound of iron slag, refuse and pottery." (AB ev)

Xiacaopu Iron Production Site of Qingyang Village in Anxi

Remains of Iron Age smelting furnaces, tuiyeres, slag were found

"......forge. Ce dernier batiment, datable de la fin du XIleme siecle, rappelle la part prise par les Cisterciens aux progres technologiques du Moyen Age. C'est un des plus anciens batiments industriels de France. " (AB eval) " Il a été construit par les moines à la fin du xiie siècle afin de travailler le minerai qui était extrait de la colline dominant le monastère. La dérivation du ruisseau de Fontenay, le long du mur de la forge, faisait tourner des roues qui actionnaient les martinets pour battre le fer." (Wiki Fr)

an early phase of iron production in Africa

some 30 bases of reduction smelters were found (AB ev)

Site of 1 of the largest deposits of high grade iron ore ever discovered. In 1991 the Guinean government removed c 4500ha of the WHS which was wanted for Ore mining from the site boundaries saying it had been included "in error". WHC accepted this in order to preserve the integrity of the remainder. Nearby mining continues and threatens water purity in the WHS. Guinea gets funding partly for foregoing 50 million tons of Ore extraction.