Tuesday, February 28, 2012

Phase II Drill Program at Moss Project Intercepts 24.38 Metres Grading 1.45 gpt Gold Eqv (1.13 g/t Au, 12.8 g/t Ag); 1.52 Metre High-Grade Intercept of 19.39 Gold Eqv (17.71 g/t Au, 67 gpt Ag) outside Main Target Area gpt

Vancouver, B.C. - Northern Vertex Mining Corp. (TSX.V:NEE)(OTCQX: NHVCF) (“Northern
Vertex”) is pleased to announce results from the first 18 holes of its 20,000 foot (6500 meter) in-fill drill
and resource expansion program on the Moss Gold-Silver Project situated in the historic Oatman Mining
district in Mohave County, Northwestern Arizona.

States Northern Vertex Chief Geologist, Dr. Bob Thompson. “We are pleased to report all five of the
Phase II infill holes, AR-124, 125, 127, 128 and 133, designed to convert resources from the inferred to
the indicated category, were successful, with each hole intersecting at least 24 metre widths of
mineralized material.

The significant intersections returned from Phase II drilling are consistent with results from our Phase 1
drill program. Importantly, they demonstrate the consistent internal distribution of gold we’ve come to
expect from the Moss gold-silver system. Holes AR-121, 122 and 123 returned a series of promising
intercepts, despite being stopped in mineralization grading 1 gpt gold equivalent. These holes were
collared approximately 160 meters south from the outcropping Moss stockwork system, where
intersections suggest a broader zone of mineralization at depth.”

You can view the complete release here