Shares in Yandal Resources (ASX:YRL) have jumped nearly 7% in late morning trades as the company kicks off RC drilling at Siona. The target of interest – tipped by Yandal as a “gold discovery” – is currently the subject of follow-up drilling. A twelve hole 2,500m RC program is being conducted with the ultimate goal to figure out how far mineralisation extends. Drillers will target up-dip and down-dip extensions of a drillhole where the company turned over a 78m drill hit grading at 1.2g/t gold from 96m depth. A second at 14m for 1.8g/t gold from 63m depth is also on the table. Yandal expects i…