THE DRILL SERGEANT: Breaker Resources (ASX: BRB) claimed discovery of several new high-grade lodes from deeper drilling undertaken below the one-million-ounce open pit Resource at the Bombora deposit within the company’s Lake Roe project near Kalgoorlie in Western Australia.
Breaker Resources declared results received from four reconnaissance diamond drill holes completed below the northern part of Bombora on a 300m spacing highlighted potential to expand the existing Resource at depth.
With the objective to scope out the potential for future underground mining below the open pit Resource ahead of targeted resource definition drilling, all four drill holes encountered gold mineralisation with visible gold present in several intersections.
This included the deepest Breaker has reported to date at Bombora in two new steep lodes situated approximately 600 metres below surface.
Highlighted results include:
4.6 metres at 12.5 grams per tonne gold, including 1.3m at 42.7g/t gold within a broader zone of 19.6m at 3.13g/t gold (a new steep lode with visible gold);
2.47m at 12.1g/t gold, including 1.37m at 20g/t gold within a broader zone of 5.7m at 5.56g/t gold (a new steep lode with visible gold); and
2.65m at 10.6g/t gold, including 0.4m at 67.3g/t gold (new flat lode).
6.85m at 4.8g/t gold, including 1.4m at 10.9g/t gold (new flat lode).
The company said the results have extended the strike length of the high-grade gold lodes below the open pit Resource by 600m to the north.
Together with results reported from previous reconnaissance drilling at depth, increasing the overall strike length of known high-grade gold lodes below the open pit Resource to two kilometres.
“The new drilling has confirmed a two-kilometre strike length of high-grade gold mineralisation situated directly below an extensively de-risked open pit Resource, 80 per cent of which is in the Indicated category,” Breaker Resources executive chairman Tom Sanders said in the company’s announcement to the Australian Securities Exchange.
“The results highlight strong potential for a significant increase in the Resource at grades typically amenable to underground mining.
“It’s also important to note that the high-grade lodes we are seeing at depth at Bombora are similar to the high-grade lodes present in the open pit Resource.
“In fact, in some cases, they are extensions of the same lodes but without a low grade halo that is typically applied in an open pit setting.
“We are now projecting the high-grade lodes over large distances at depth, and we either are hitting them with our reconnaissance drill holes, or discovering new lodes in the process, or both.
“Based on the recent drilling, some of the individual flat lode systems are in excess of one-kilometre-long, which matches the dimension of some of the west-dipping lodes in the shallow portions of the deposit.
“We believe that the continuity we see in the shallow portions of the deposit is likely to translate into a viable future underground mining scenario.”