Prime Minister Ana Brnabic said in Bor today that the Institute of Mining and Metallurgy in this city is the best example of how it used to be before when this institution was indebted and when the salaries of miners in 2011 were RSD 55,000 per month, and how it is today when it has an annual revenue of €6 million and miners earn an average of RSD 95,000 per month.