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Gold/Mining/Energy : Medinah Mining Inc. (MDHM) -- Ignore unavailable to you. Want to Upgrade?

To: steve brooks who wrote (17633)	7/27/1999 10:46:00 AM
From: Mike Gold	Read Replies (1) \| Respond to of 25548

Steve, lots of different geophysical tools in use today. Here's one technique in use besides IP... From the House report: We held discussions with GeoDatos S.A.I.C. of Santiago de Chile concerning further geophysical exploration of the shear zone at Las Dos Marias. It was pointed out that the old mine workings are filled with water and water loss was not a problem in the drill program, showing the water table is close to surface. This suggests the shear zone is water filled and should provide an excellent target for electromagnetic type of surveys. GeoDatos suggested a CSAMT electromagnetic survey would be appropriate for tracing the shear zone, and recommended a 25 meter station interval on lines spaced 100 meters apart. The existing grid will need to be re-surveyed and the new stations surveyed in. We recommend that a CSAMT electromagnetic geophysical survey be carried out over the shear zone on the west bank of Quebrada Durazno, utilising 25 meter stations on lines spaced 100 meters apart. The CSAMT survey should be carried out prior to the recommended diamond drill program to allow for refinements in locating the drill platforms as this new geophysical information may show up deviations in the supposed strike of the shear zone. CSAMT is short for Controlled Source Audio Magnetotellurics. Some sort of low frequency electrical current is used to determine thickness and electrical resistance of a given ore body. If you like to get more up to speed-try this link: mines.edu Cheers.