Sahand Silica Company of Tabriz with operation permission from Qara Tutah Khana Silica Mine and has been located at 120km of the factory and district of Bonab town in an impassable area. This mine with 6 million tons storage of stone with higher grades acts as the largest silica mine in the Northwest of the country. It has started its exploration activities since 2003 and due to impassable nature of the area an asphalted road with the distance of 9 km and width of 2 truck passage was established and explosive materials stores were also established based on scientific and protective rules confirmed by Sahand Industrial Group which supplies the feed for Sahand Industrial Group glass production. For scientific and optimal exploration of the mine with heavy appropriate machinery and advanced equipment, a group of experienced engineers are working in the factory throughout the year, considering all technical and scientific points. This mine was selected as the best mine of the province in the years 2016-2017. Also, the most advanced scientific and technical models were employed for mining.
Exploration in the mine is as follows: after explosion operations, the ore samples are isolated based on the type and related features and then they are transferred to the factory by trucks. Then they are transferred to the processing line of Sahand Silica factory based on the mine production plan. The ore samples are transferred to primary crusher. After crushing, secondary crushing is started and operations of washing, iron separation, material arrangement, wastes isolation and optimal grading of the raw materials are conducted.