The problem of steady, laminar mixed convection heat and mass transfer past a semi-in finite vertical plate in the presence of Hall current has bee n studied. The governing partial differential equations describing the problem are transformed to a system of non- linear ordinary differential equations with appropriate boundary conditions using Lie’s method of infinitesimal transformation groups. The nonlinear ordinary differential equations are solved numerically using Chebyshev spectral method. The effects of various parameters on the velocity profiles, temperature and concentration profiles are presented and discussed. This work is an extension and correction for the paper by Megahed et al. [1] , published in International Journal of Non-Li near Mechanics 38 (200 3) 513–5 20.