Aspiring Indonesia gold producer, Sihayo Gold, is set to kick off a first-pass 22-hole diamond drilling program totalling about 5,500m at the exciting Hutabargot Julu prospect at its Sihayo gold project in North Sumatra. The ASX-listed, Brisbane-based company is looking to start drilling next month once drill rigs have been flown in by helicopter and assembled in the mountainous jungle terrain.