The Oyu Tolgoi concentrator is the biggest industrial unit ever built in Mongolia. It contains enough steel to construct the Eiffel Tower three times and took more than 15.7 million individual work hours to build.

The concentrator covers an area 255 metres long and 144 metres wide. The concentrator produced its first copper concentrate on 1 February 2013 and commenced shipments to customers on 9 July 2013. The concentrator can process up to 100,000 tonnes of ore each day. The concentrator plant will be upgraded during underground construction to handle higher-grade ore and increased production.