De Grey Mining Limited (ASX: DEG) is a Western Australia-based mining company engaged in gold exploration and development activities. The Company’s primary focus is the 100% owned Mallina Gold Project in the Pilbara region of WA. Here De Grey has made a large scale, high value, near surface gold discovery at an area called Hemi. The Hemi discovery is an intrusion-hosted form of gold mineralisation which has not been previously encountered in the Pilbara. The high value of the discovery is driven by its size, grade continuity and growth potential.