MARIANA RESOURCES LTD (MARL)

MARIANA RESOURCES LTD (MARL) – Sierra Blanca Project Trench Results Update
Mariana extends strike length of high-grade silver target at Chala, to over 1.6 km, Sierra Blanca Project Argentina. Drilling to commence September/October, 2008. Mariana Resources Ltd is  pleased to announce results of the remaining  14  trenches from  a  total  of 1,156  metres  (m) of trenching at the  Chala Vein, located  in the northeast  part of  the Sierra Blanca  concession.

Highlights of the latest results include:
  * 7.9 m @ 190 grams per tonne (g/t) silver and 0.8 g/t gold in Trench 24, including 1m @ 756 g/t (24 ounces per tonne {oz/t}) silver and 3.3 g/t gold
  * 4.3 m @ 200 g/t silver and 0.3 g/t gold in Trench 25, including 0.8 m @ 832 g/t (27 oz/t) silver and 1 g/t gold.
  * 0.5 m @ 269 g/t silver and 2.3 g/t gold in Trench 39

Commenting today, Managing Director of Mariana Resources Ltd, John Sutcliffe said
“This last batch of trench results from Veta Chala continues to confirm the area to be a premium bonanza silver drill target. Much of the 25 kilometer Sierra Blanca vein system remains substantially under-explored, with extensive areas of cover obscuring the full extent of the system. Drilling will be undertaken as soon as permitting is completed and rig availability confirmed.”

For more information please go to: www.marianaresouces.com