This study of iron bloom crushing mortar sites in the Bassar region of northern Togo has revealed several important points: 1) the heterogeneous nature of sub-Saharan African iron blooms required that they be broken up to remove slag and charcoal as part of a refining process prior to the making of iron tools, 2) this process has been documented in the Bassar region and to a lesser extent in the Sukur iron-working area of the Mandara highlands of Nigeria, but it is likely to have been present in many other areas of West Africa and beyond that have not as yet been described, 3) the larger iron bloom crushing mortar sites or outcrops, called likumanjool in the western Bassar region, were used from the Late Stone Age through the Later Iron Age for a variety of purposes, including stone axe polishing, iron bloom crushing and refining, hot forging of iron ingots and tools, and the sharpening of metal tools, but were probably not used extensively for the grinding of grain as appears to have been the case in the Mandara mountains of north-eastern Nigeria, and 4) the Bassar region study has revealed at least two stages in the location, preparation and use of stone anvils for hot forging as the Bitchabe region of Bassar moved from generalised iron working toward specialising in smithing as the intensity of iron production and trade began to grow significantly after the sixteenth century. The results of this study will hopefully encourage others to identify and study iron bloom processing sites elsewhere in sub-Saharan Africa.
The Bassar region iron-working industry
The iron-working industry of the Bassar region of northern Togo (figures 4.1 & 4.2) has been studied since the German mining engineer F. Hupfeld (1899) described it more than a century ago. In-depth cultural anthropological and archaeological studies began in the 1980s with Martinelli (1982, 1984, 1992), Goucher (1984), De Barros (1985, 1986, 1988, 2001, 2012, 2013), Dugast (1986, 1992, 2012, 2013) and Hahn (1997).).