To: The Fix who wrote (5220 ) 2/19/1998 12:55:00 PM From: Taz Respond to of 26850
Fix: I tried this last nite but it wouldn't post for some reason so here goes again. To the best of my knowledge the mini bulk sample that is being taken from the dyke on the NW peninsula at Snap will be done with an "airtrack" which is an air powered percussion drill on tracks, makes sense eh! This drill is powered by a large air compressor on wheels that tows behind the drill. Using rotating percussion bits it will drill shallow holes with a diameter of approx. 1.5" to 2'. The whole rig "walks" along the ground using its tracks driven by the air as the operator walks along with it handling the controls. This type of drill is commonly used in surface mining and construction rock work. The larger versions are used in open pit mining. Once the kimberlite dyke face has been exposed from beneath the overburden, the drill will complete multiple shallow holes in the kimberlite. The drill may have to be employed in getting through the overburden as well. These holes will be loaded with light charges of powder which when ignited will break the rock , rather than blast it. The material will then be recovered, as George pointed out, using conventional equipment (cat, loader, backhoe). I presume the material will be stockpiled until it is shipped from the property. The contractor engaged by the company is bar none, the best rock man in the business, so it will probably go smooth coming out of there, weather pending. Getting it off the property and shipped to a processing plant will be the fun part. The company has ensured that the security is tight so that no one will be pilfering your diamonds, at least until they've been counted! I'm not certain about the specifics of the delineation holes, but George sounds pretty much on track. Standard DD holes, probably NQ. Gotta run. L8er. Regards, TAZ