Exemplary Motor Mechanics Video(must see)

[zeropointbug]

No doubt, those look like almost 200lb magnets... I have got my right index finger inbetween two ~300lb magnets, didn't break it luckily, but fuuuuuu... I felt so helpless for a couple minutes trying to pull more than 300lbs with a couple fingers from my opposite hand. Had to get a crow bar in there and GINGERLY pry it without injuring my finger. I couldn't pull my finger out the side as it would have just tor the skin right off, not that I could as there was so much pressure and friction.

You could make a pretty powerful generator with those magnets if you had some coils made up.