Nwaokocha,Olamide O. Olalekan, Abayomi T. Layeni, Solomon O. Giwa & Olukayode O. Adama, Musediq A. Sulaiman, Collins N. 2018. “Performance Indicators for Sustainable Cement Production in Nigeria”. COVENANT JOURNAL OF ENGINEERING TECHNOLOGY 2 (2). https://journals.covenantuniversity.edu.ng/index.php/cjet/article/view/1189.