The patent for the subterine is available to look at, it works buy melting the rock to the point where their is no need to clear wast, and the walls are smooth and glass.

this was supposed to be top secret, but some one forgot to label it as so.

Funny you mention Nicoli Tesla, because he has allot to do with all of this, the man was brilliant and Edison, screwed us all buy hiding him and ridiculing, him.

Edison, made over a 1000 versions of light bulb before, it was functional and able to mass produce. It is said Nicoli Tesla made one light bulb and it was far Superior in every way, to even the bulbs we use now. Superior in every way for lumen's to lumen spectrum, to power consumption, and even in power supply.

If you have ever seen the movie The Core, the vehicle they make with the laser that burrows into the ground, well that is where the idea for the machine in the movie came from. Similar very similar, only one is in movie and the other is tunneling as we speak