clinker grinding plant south africa

clinker grinding plant south africa

Aug 30, 2017· For instance, while ethnographically the most cited use forgrinding-stonetools inAfricaisplantprocessing (e.g., Boshier 1965; Lee 1973; Roux 1985; Walton 1953), other southern African ellipsoid lowergrinding-stoneforms reminiscent of those Huffman identifies as sorghum and milletgrinding-hollows may have also been used for sharpening

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