Okechukwu, C., O. A. Dahunsi, P. K. Oke, I. O. Oladele, and M. Dauda. “Development of a Laboratory Size Single Toggle Jaw Crusher for Artisanal Miners and Stone Workers”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT 16, no. 3 (September 1, 2020): 449-474. Accessed January 24, 2022. https://azojete.com.ng/index.php/azojete/article/view/284.