Bayfield Ventures Corp BYVVF

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Bayfield Ventures Corp.: Drilling to Commence on Rainy River Claim Block "A", NW Ontario VANCOUVER, BRITISH COLUMBIA--(Marketwire - Aug. 21, 2007) - Bayfield Ventures Corp. (TSX VENTURE:BYV) (FRANKFURT:B4N) and Range Metals Inc. announce that the companies have mobilized a diamond drill rig to the Rainy River district of Northwestern Ontario for a drill program on their 50/50 joint venture Claim Block "A" project. The property is located approximately 800 metres to the southwest, on strike, of Rainy River Resources gold discovery on their ODM zone and the #17 zone. Rainy River Ontario Claims Map: https://www.bayfieldventures.com/i/maps/BYV-RR-Area-all.gif Overburden drilling and geophysical surveys (magnetometer and Horizontal Loop electromagnetic) have been completed over the property during the 2007 winter exploration program. Several targets on this block warrant diamond drilling with anticipated Phase 1 drilling consisting of 6 to 7 holes totaling 1,500 metres. The Horizontal Loop electromagnetic survey indicates several moderate strength bedrock conductors. Of significance is the location of the conductive zones with respect to structures and a large area with high pristine gold grain counts. The cluster of sites with high pristine gold grain counts would indicate proximity to a bedrock source of gold. 5 reverse circulation drill holes totaling 150 metres were completed during the 2007 winter exploration program. These holes were designed as infill drill holes to confirm and expand information from a previous reconnaissance overburden drill program by Nuinsco Resources in 1996. Average depth of samples taken on the Claim Block "A" was approximately 25 metres. Five till samples contained between 400 and 2,400 ppb gold, as determined by Overburden Drilling Management Ltd. David J. Busch, B.A., B.Sc., PGeo., is the qualified person under the meaning of National Instrument 43-101 and has reviewed the data in this News Release. Bayfield Ventures Corp. is actively involved in the exploration for gold in Northwestern Ontario, and copper-gold and coal in the South Gobi region of Mongolia. Property partners include Goldcorp and BHP Billiton. For further information on Bayfield Ventures Corp. (TSX VENTURE:BYV), visit the Company's web site at www.bayfieldventures.com. ON BEHALF OF THE BOARD OF DIRECTORS Donald C. Huston, President