The deposits in Ambatovy and Analamay were discovered in 1960 and extend over 8 sq km in the centre of Madagascar. Between 1975 and 1990, when the country's socialist revolution took place, the President attempted to set up a chrome/iron operation at the sites. Commissioning of mining equipment commenced in 2010 and was followed by the start of ore processing in 2012. Production of mixed sulphide commenced in late May 2012. Approximately 700 tonnes of this was introduced to the refinery during the second quarter and a preliminary batch of nickel briquettes was sintered on June 26as part of the testing and start-up of the refinery. The project was deemed to have reached commercial production in Q4 of 2013. Total capital costs inclusive of financing charges and working capital (net of sales revenue prior to commercial production) were US$7.2bn of which US$5.3bn was the total capital cost of construction.