Figure 8From: Preparation and Characterization of Nano structured Materials from Fly Ash: A Waste from Thermal Power Stations, by High Energy Ball MillingFTIR spectrum of fresh and ball milled fly ash at varying time, (A) Fresh Fly ash, (B) Ball milled for 20 h, (C) Ball milled for 40 h and (D) Ball milled for 60 hBack to article page