In 1994, an article appeared in the Italian journal Archeologia Medievale, written by Chris Wickham and Riccardo Francovich, entitled ‘Uno scavo archeologico ed il problema dello sviluppo della signoria territoriale: Rocca San Silvestro e i rapporti di produzione minerari’. It marked a breakthrough in the study of the exploitation of mineral resources (especially silver) in relation to forms of power, and the associated economic structure, and control of production between the twelfth and thirteenth centuries. On the basis of the data available to archeological research at the time, the article ended with a series of open questions, especially relating to the early medieval period. The new campaign of field research, focused on the mining landscape of the Colline Metallifere in southern Tuscany, has made it possible to gather more information. While the data that has now been gathered are not yet sufficient to give definite and complete answers to those questions, they nevertheless allow us to now formulate some hypotheses which may serve as the foundations for broader considerations as regards the relationship between the exploitation of a fundamental resource for the economy of the time, and the main players and agents in that system of exploitation, within a landscape that was undergoing transformation in the period between the early medieval period and the middle centuries of the Middle Ages.