Blackheath Resources Inc. announced results from the recent work program, and also previously unreported historical reserve estimates, from the Vale das Gatas Tungsten Mine. Highlights from the work program include an underground sample of stockwork totaling 11 metres averaging 2.09% WO3 (tungsten trioxide). The permit area includes the historic Vale das Gatas Tungsten Mine, the second large past producer of tungsten in Portugal, which closed in 1986 as a result of low tungsten prices, and also an undeveloped mineralized zone, the Prainelas Sector, to the south, where Blackheath has focussed on a programme of surface and underground mapping and sampling.

Prainelas hosts multiple, closely spaced, parallel sub-vertical mineralized veins with evidence of narrow, but high grade, wolframite (tungsten) mineralization and additional silver values. During the most recent work program at Vale das Gatas, Blackheath reviewed a historical mining reserve estimate reported by the Ministry of Industry and Energy of the Government of Portugal in 1991. The Vale das Gatas mine was the second most prolific past producer of tungsten in Portugal, after Borralha, also held by Blackheath.

The Vale das Gatas mine closed in 1986 as a result of a significant decline in tungsten price. At its peak, the mine employed over 1,000 workers and produced up to 635 tonnes of tungsten concentrates annually. The average recovered grade of the mine was 0.35% WO 3 per tonne.

At least 40 tungsten-bearing sub-vertical quartz veins have been identified over some 1,200 metres in the Prainelas sector, with lengths up to 1,200 metres at surface. To date, Blackheath has identified approximately 300 old exploration workings on the property. These workings include adits, trenches and small open pits.