Golden Star Resources (GSS +1.2%) says it produced 92,614 oz. of gold in Q4, of which 87,544 oz. were sold, a 31% increase Y/Y and 15% Q/Q. For 2012, GSS produced 336,348 oz. of gold, of which 331,278 oz. were sold, in-line with guidance and a 12% gain over 2011; cash operating costs are estimated within $1,040-$1,100/oz. guidance.