Ilam province has good potential resources of bitumen, gypsum and celestite. The purity of Ilam gypsum is over 99% which is very good in terms of quantity and quality. Tow factories with a total annual production capacity of 300 thousand tons have been constructed in Dehloran region to supply the required gypsum of province and neighboring provinces. Ilam bitumen has a high quality and quantity, there are 9 active bitumen mines with an annual production of 10500 tons in the province. In order to enhance the added value of bitumen,4 coke production units will operate next year. The potential reserves of celestite discovered in the province. This mineral is used to manufacture of television, toothpaste, munitions and flares.