In recent years, fly ash is a subject of worldwide concern due to considerable environmental importance. It has been recognised that use of fly ash in stowing or backfilling of mines is an attractive solution to its disposal problems. Characteristics of fly ash and its response to imposed load must be studied beforehand for its effective utilization in stowing. This research work presents the physico-chemical characterization of fly ash of two thermal power stations located in the eastern part of India utilizing Talcher coal as fuel for power generation to assess their suitability for stowing...