Gold production in Australia hit its highest level in a decade last year on the back of increased processing of higher-grade ores by mining companies.

Figures from mining consultant Surbiton Association indicate that Australia’s gold production volume lifted to a decade-long high last year. Output in the world’s second biggest gold producer saw a year-on-year gain of 18 metric tonnes in 2013 to hit 273 tonnes in total – its highest level since 2003. 2013…