ASX-listed Indonesia-based gold explorer Sihayo Gold has increased its initial expected gold recovery rate from 35 per cent to a solid 80 per cent in fresh rock samples after trialling high pH leaching metallurgical test work on ore from its advanced Sihayo gold project in North Sumatra.
Transitional ore samples also received a healthy boost to the recovery rate, rising from 52.3 to 74.5 per…
