Aim-listed Harmony Gold is on track to deliver on its full-year production guidance, the company said in an operational update for the nine months ended March 31 published on Thursday. During the nine-month period, gold production increased by 29% year-on-year to 1.08-million ounces, with underground recovered grade up 6% year-on-year as a result of the acquisition of Moab Khotsong, in South Africa, and the build-up in production from Hidden Valley, in Papua New Guinea.