Muruntau is today the world's top gold-producing mine. The Muruntau mine is owned by the Uzbekistani government, which is not very forthcoming when it comes to information relating to its mine. Nonetheless, according to mining.com, Muruntau produced approximately 2.15 million ounces of gold in 2014 and 2015.
Presuming it produced a comparable amount, the mine retains the title of the top gold-producing mine in the world. In fact, its gold production would have to be nearly cut in half for it to fall behind Pueblo Viejo.
Muruntau is the world's largest open-pit mine, by area, and the world's fifth deepest. Again, due to the absence of free-flowing information, it's difficult to be certain, but some estimates place Muruntau's gold reserves as high as 170 million ounces.
The Muruntau gold deposit is situated in the Kyzyl Kum Desert of Uzbekistan. It is being mined with production believed to be of the order of two million ounces per annum. The open pit measures about 3.5 by 2.5 km and extends to a depth of 560m (2012).
The gold ore resource in the Muruntau deposit, including production, is about 170 million ounces of gold.
The giant Muruntau Gold deposit was discovered in 1958. The area was a source of turquoise since the days of the Silk Road. It was not until the 1950s, however, that the Muruntau area was systematically explored.
A large gold and arsenic geochemical anomaly, detected during systematic geochemical sampling and geological mapping of the area indicated the Muruntau deposit. Auriferous quartz veins were subsequently found in surface exposures at the site of the current open pit. Mining commenced on the deposit in 1967, and production has been continuous ever since.
Source: Uzbekistan Gov.