Tozlar gold mine is located in 25 km west-southmest of Mahneshan city (Zanjan province) and 150 km southwest of Zanjan city. Based on the results of visits and sampling and explorations, Tozlar Company succeeded in obtaining the exploration certificate in 2007 and subsequently in 2008 succeeded in obtaining an operation licence with a grade of 2 grams per ton and a definitive storage of 900,000 tons orebody and possible storage of 1,800,000 tons.
In 2010, Tozlar Company designed and manufactured a gold ore dressing plant in order to prevent the sale of raw materials and create jobs in deprived areas.
Due to the low efficiency of this method and also the low capacity of the existing line, Tozlar Company designed and manufactured the production line of factory by leaching tank with a moderate capacity.
Currently, the production line of the factory by leaching tank is working with modifications and changes that increased capacity of factory.