Barrick's March quarter 2015 report showed its share of production was 59,000oz at an all-in sustaining cost of US$1271/oz. Total output for the quarter fell to 118,000oz from 162,000oz in December, which Barrick attributed to a 16 day shutdown in February. The shutdown saw 600 additional contractors working alongside KCGM's standard personnel to complete a milling and girth gearing upgrade at Fimiston plant. Environmental upgrades In early June, KCGM announced changes to its gold processing infrastructure, replacing the Gidji processing plant's nearly-30-year-old roasters with a 30tph ultra fine grinding (UFG) mill. The upgrade is a part of KCGM's $98 million Emissions Reduction project, and will work to eliminate atmospheric stack emissions from Gidji.