Hasan , A.J. and Shebeeb, H.S. 2026. Evaluating the Economic performance efficiency of the Alqaseem central concrete mixer for the period (2020-2024). Al-Ghary Journal of Economic and Administrative Sciences. 21, 3 (Jul. 2026), 320–355. DOI:https://doi.org/10.36325/ghjec.v21i3.19518.