De Grey Mining Limited (ASX: DEG) has reported further drilling success at its Hemi Gold Discovery, located approximately 60km south of Port Hedland in Western Australia.
Managing Director, Glenn Jardine, said the overall footprint of Hemi is now approximately 2.5km north to south and 2km west to east with three main zones (Aquila, Brolga and Crow) defined within this large gold system.
The company currently has two aircore rigs testing for new intrusions or extensions to known mineralisation at the Brolga Zone, rated as one of Australia’s most promising recent gold discoveries.
Meanwhile, two diamond drill rigs are testing for depth extensions and have recently completed holes for metallurgical testwork.
Mr Jardine said the latest results demonstrate extensions at Brolga to the north, northeast and south, plus strong continuity of mineralisation within Brolga in dedicated metallurgy holes.
“We continue to test for extensions to known mineralisation around Hemi using aircore and RC drilling.
“Aircore drilling has intersected new mineralisation approximately 320 metres north east of Brolga. This is along the structural corridor heading toward Scooby. RC drilling has succeeded in identifying extensions to the north of Brolga, heading toward Aquila.
“Specific diamond drilling has been conducted to provide samples for metallurgical variability and optimisation test work. The assay results from metallurgical drilling will provide additional information on internal continuity of the gold mineralisation within Brolga.
“The rig combination at Hemi is allowing us to locate near surface extensions with aircore drilling, delineate and extend known mineralisation with RC and then look for depth extensions with the diamond rigs.
“This combination is working successfully toward our strategic goal of making Hemi a Tier 1 scale deposit and finding additional upside nearby.”
Best results from the RC drilling has been conducted to test for extensions to mineralisation to the north, north east and south west of Brolga and to provide pre-collars for deeper diamond drilling into Aquila and Crow include 40m@2.0g/t Au from 36m; 30m@1.6g/t Au from 101m; 5m@2.8g/t Au from 142m;7m @ 3.9g/t Au from 53m and 12m @ 2.9 g/t Au from 36m