Recent Developmental Highlights
The odds in favour of the delineation of polymetallic near-surface economic resources at the Moonlight Property have benefited considerably from Sheffield’s exploratory rock sampling programs and drilling efforts, which began in 2005.
Most notably, a total of 14 drill holes spanning 3,134 metres (10,281 feet) at the Moonlight Deposit have helped corroborate the theory that Placer under-estimated the overall tonnage size of the deposit, as well as its average grades.
Of particular significance, modern, technologically advanced drilling techniques attest to the fact that much of the deposit’s mineralization is hosted by fractures, which Placer believed were never properly tested by way of Placer’s historic vertical drilling by small gauge coring equipment. For instance, Sheffield demonstrated that average copper grades recovered are better than those reported by Placer and that average grades estimated by volumes using Sheffield’s data average 44% greater than for estimates using only Placer’s data. Superior geological modeling is also revealing the presence of meaningful near-surface copper mineralization that was completely overlooked by Placer.
Sheffield’s drilling highlights included an average of 0.54% copper over 185 metres (beginning at only 9 metres beneath the surface), plus 7 grams per tonne (g/t) of silver in the same mineralized intercept. Another notable intercept encountered an average grade of 0.37% copper and 4 g/t of silver over 178 metres (beginning at only 11 metres beneath the surface). Again, Placer commonly did not recognize economic copper values until much deeper and as a result may have under estimated the tonnages of oxide copper mineralization occurring at the several Moonlight Project deposits.
Sheffield therefore intends to undertake up to 9,000 feet of large diameter core drilling this summer to develop a much better understanding of the size and scope of the deposit’s shallow oxide mineralized zones.
Later drill program will also test the vertical and lateral extensions of the known mineralized zones. Notably, Placer’s historic drilling proved that mineralization can be encountered to depths of 1,800 feet or deeper at the Moonlight Deposit. The prospect of delineating significant more copper sulphide mineralization at depth could conceivably more than double the deposit’s mineral inventory.
GOLDEN LOON PROPERTY 
