During the Middle period (400-1000 AD), metal objects increased significantly in the cemeteries of San Pedro de Atacama, suggesting the centrality of metals in the structuring of relations between local leaders and Tiwanaku. This paper presents
the metal objects that circulated in the Atacamenian space during this period through their typological identification, the determination of the alloys in which they were manufactured and their productive evidence. From these results, we discuss the presence of a local metallurgical production and its coexistence with other technological traditions in the South Central Andes. We conclude by evaluating aspects of the social production and use of metals during the Middle Horizon in San Pedro de Atacama.

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