it should be processed, bazargan, and we can work with a minimum feed of two million per year.can make 620,000 tomans of 750-grade zinc concentrate at 180,000 tomans of 60% grade lead concentrate in the reality of the first phase of production, among other unique features in the exploitation of mehdi lead and zinc mine. abad, executive of the country's largest sewage transfer line it is 10 kilometers long, and it transports waste water here with a pressure of 32 bar for 100 seconds. it is transferred here, and it is read again in the concentrate factory complex here. china, kazakhstan and india are the biggest producers of lead and zinc in the world. amir taheri of sada news agency sima mine, mehdi abad, bahadran, mehriz, yazd province, and so far more than 3,500 ecotourism houses have been organized , despite the increase in the licensing process for ecotourism residences, some houses are still operating illegally without permits, the life of ecotourism in iran has reached 20 years, a branch of tourism industry that it has attracted investors and the respect of tourists, and i