Dermish أ., Shaneb ع., Elamin ف. and Abugeddida ر. 2024. Improving The Performance of The Production Process Using Six Sigma Methodology. A Case Study at The Libyan Iron and Steel Company. Journal of Pure & Applied Sciences . 23, 2 (Oct. 2024), 100–112. DOI:https://doi.org/10.51984/jopas.v23i2.3065.