Sorry OT, but I have to ask


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Posted by Paul(in NY) [12.64.140.42] on Friday, September 17, 2010 at 16:00:44 :

All news services are reporting that a 12" diameter bore hole has now reached the trapped miners in Chile. Now to start enlarging the hole.

1. How do the drillers on the surface know so exactly where to drill to enter the are where the miners are trapped. What kind of equipment is used to pinpoint their target

2. How do they keep the drill bit from wandering off course. A small degree wander would be many feet at the destination and maybe miss the area the miners are trapped. How do they steer the drill bit.

These are questions, I just dont know. Thanks for the patience

Paul



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