De Grey Mining Ltd’s (ASX:DEG) drilling program has successfully intersected high-grade underground lodes below the Withnell proposed open pit at its Pilbara Gold Project in Western Australia.
The results from the last six holes of the 15-hole diamond drilling program includes high-grade gold hits further supporting the Withnell Underground potential.
Withnell plan view showing proposed open pit cutback and the four known underground lodes
Additional high-grade gold intersections include:
• Lode 1: 4.65 metres at 7.1 g/t gold from 164.15 metres (including 2.85 metres at 10.39 g/t gold from 165.45 metres);
• Lode 1: 4.13 metres at 10.23 g/t gold from 125.47 metres (including 0.35 metres at 27.7 g/t gold; and
• Lode 2: 8.28 metres at 2.71 g/t gold from 164.2 metres (including 0.8 metres at 11.53 g/t gold from 170.35 metres).
READ: De Grey Mining boosts gold bounty at Pilbara project to almost 1.4 million ounces
The Pilbara Gold Project boasts a large pipeline of attractive exploration targets and the company is actively ramping up exploration throughout the tenement package in a drive to discover new resources and expand the current 1.4 million gold ounces resource.
The underground potential at the two largest gold deposits, namely Withnell and Wingina, is considered high in terms of additional tonnes, grade and resource ounces.
Withnell Underground has an exploration target of 2.6 - 3.5 million tonnes at 4 g/t to 6.5 g/t for 330,000 to 20,000 gold ounces at a depth of between 200 and 600 metres below the current resource of 6.37 million tonnes at 1.8 g/t for 377,300 gold ounces.
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Follow-up diamond drilling is currently being planned to test the depth extensions of the 800 metres x 400 metres Withnell Underground Exploration Target.
The aim of the drilling will be to initially undertake wide-spaced 100-200 metres spaced step out drilling to define the limits of the gold mineralisation associated with Lode 1 through to Lode 4.
Subsequent infill drilling to 50-80 metres spacing will be subject to further positive results and will aim to better define higher grade shoots within the broader mineralisation.