Yisa Tufion Albert, W., David T. , G., A. , A. and Kuhe, A. 2022. PERFORMANCE EVALUATION OF BLACK SOAP (TOILET SOAP) BLENDED WITH DE-OILED JATROPHA CAKE ADDITIVE AS SOLID LUBRICANT IN DIRECT COLD EXTRUSION OF ALUMINIUM ALLOYS. International Journal of Engineering Science Technologies. 6, 4 (Aug. 2022), 66–83. DOI:https://doi.org/10.29121/ijoest.v6.i4.2022.368.