Tethyan Resources PLC announced completion of its 4 diamond drill hole programme (total 2,318 m) at the Rudnitza copper-gold porphyry prospect within the Suva Ruda exploration permit in Serbia. Tethyan has received assay results for the first drill hole RDD-001. Drill hole RDD-001 from surface intersected a thick package of dacitic volcanic rocks showing strong phyllic and propylitic alteration with extensive zones of thin (2-20mm) quartz - pyrite ± chalcopyrite veining and stockwork. Between 122 - 160 m a 38 m chalcocite-bearing zone of supergene enrichment was intersected giving an interval of 38 m at 1.18% copper and 0.38 g/t gold, although copper grades were lower in the leached zone above this interval gold grades remain consistent averaging 0.45 g/t gold. From a depth of 160 m gold and copper grades are remarkably consistent up to the intersection of a deeper ophiolite basement rock-type which was intersected between 567 and 584.6 m and where the gold and copper grades reduced. The drill hole was terminated due to drilling issues at 584.6 m still in mineralisation. RDD-001 was drilled very near to the site of one of the earlier Phelps Dodge drill holes which had reported 144 m grading at 0.4% copper and 0.4 g/t gold but had been completed at 244 m still in mineralisation. The results reported here confirm the earlier data but, more importantly, indicates that porphyry copper-gold mineralisation continues to a far deeper extent at Rudnitza.