Integra Mining (ASX: IGR) has returned high grade intercepts from the Imperial Prospect, including a peak intercept of 1 metre at 91.31 grams per tonne (g/t) gold and 4.41% copper within a broader intercept.
Imperial is part of Integra's Randalls Gold Project, located 500 metres northwest of the Majestic Gold deposit.
A recent program of reverse circulation drilling was carried out to test the continuity and extend of high grade gold and copper mineralisation at Imperial.
The latest assays from this program included highlights of:
- 5 metres at 43.9g/t gold and 4.5% copper, including 1 metre at 91.31g/t gold and 4.41% copper;
- 6 metres at 10.28g/t fold and 1.13% copper, including 1 m3543 at 24.59g/t gold and 2.08% copper and 1 metre at 24.47g/t gold and 3.13% copper; and
- 11 metres at 3.9g/t gold and 0.09% copper, including 1 metre at 9.89g/t gold and 0.11% copper.
Assays from a further 10 holes from the drilling program are pending.
Results from this program and previous drilling programs at Imperial in late 2011 and early 2012 indicate that mineralisation continues over at least 190 metres strike and remains open the north, south and at depth.
Integra is conducting electromagnetic and induced polarisation surveys to test these extensions, and resource definition drilling is due to begin in early May.
Gold mineralisation at Imperial is hosted within the same granodiorite unit hosting the Majestic Gold deposit and appears to be associated with a similar series of tonalite porphyry dykes.
Randalls milestones met
In early April Integra reached two major milestones at the Randalls Project, delivering first ore from the Maxwells deposit ahead of schedule and intercepting the first gold underground at Cock-eyed Bob.
The first load of ore from Maxwells was delivered to the Salt Creek process facility on April 2, with ore from the project to be blended with Salt Creek ore to provide mill feed at a grade of about 2.7 grams per tonne (g/t) gold.
Ore to be trucked from Maxwells comes from the stockpile, which now stands at 150,000 tonnes, including 60,000 tonnes of high grade material of about 3.85g/t gold, and from the scheduled 40,000 tonnes per month of high grade ore being mined from the open pit.
Maxwells will provide ore feed to the Salt Creek facility for two and a half years, while the Majestic open pit is expected to be fully permitted for production in early 2013, and will also be a source of ore feed for Salt Creek.
At the Cock-eyed Bob deposit, the first gold mineralised banded-iron formation has been intersected underground, at 96 metres along the decline.
Trial underground mining began at Cock-eyed Bob in January, with the aim of demonstrating the potential for long-term production from underground sources at the Randalls project.
The Randalls Project comprises resources at the Salt Creek, Maxwells and Cock-eyed Bob deposits along with a number of exploration prospects.
Integra has identified a total JORC Resource for underground operations at the Randalls project of 3.2 million tonnes at 5.7 grams per tonne (g/t) gold for total contained gold of 580,000 ounces.
The company is targeting a 10 year mine life at Randalls without further discovery.
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