On mining see K.A. Yener, “The Archaeometry of Silver in Anatolia: The Bolkardağ Mining District,” American Journal of Archaeology (1986), pp. 469–472; on the old Assyrian Caravan Trade, see the summary by K.R. Veenhof, “Kanesh an Assyrian Colony in Anatolia,” in J.M. Sasson, ed., Civilizations of the Ancient Near East (New York: Scribner, 1995), pp. 859–871.