Two radiation techniques involving Micro-Wave (MW) and Gamma Ray (GR) pretreatments of both high- and low-sulphur coals have been successfully experimented on and the present paper makes an appraisal of their potentiality in the simultaneous desulphurisation, demineralisation and comminution of coals. The MW treatment consisted essentially in treating of Indian and British coals (19-25 mm size) in a X-band Generator (750 mw, 9.275 GHz) as well as in a Microwave oven (500 w, 2.45 GHz) for about 1 min., whereas GR treatment was carried out by irradiating the coals (size -72 mesh) of N.E. region and Wardha Valley in a slurry phase, using Co-60 gamma irradiator (initial strength 2400 Ci) at different doses (58, 175 and 250 Mrad). The coals were thereafter analysed for their total sulphur and organic sulphur, ash content, CV and size reduction etc. The results have shown that MW pretreatment alone ga ve an increase of 10-25% in the product size range and 25% reduction in the total sulphur content with a corresponding reduction of 25% in the ash content of low and high sulphur coals. The results on the GR pretreatment have evinced the simultaneous removal of upto 70% total sulphur (all forms) and 30% mineral matter from these high-sulphur Indian coals without seemingly affecting the coal matrix and its caking properties. A combined MW-Gr approach has been suggested for effective simultaneous desulphurisation, demineralisation and communtion of high-sulphur coals.