Rockhead turned into a crackhead

-but i was embressed with his science here too.
as a matter of fact, his science in all his books is good. he does good research and tends to stay true to the science in his story development. as with all scifi authors, some fudging or expansion of science fact occurs for the good of the story. but sigler tend to bend things and still remain in the realm of the plausible
http://www.pgholyfield.com/maah/

Yeah, I'd say EARTHCORE has about as much in common with real geology and engineering as CSI:Miami has with real crime scene investigative work. Still, I put it above the majority of books I've read that involve mining and geology - I talked to several precious metals miners, the geothermal activity is sound, and most of the tech was quite accurate when I wrote it. There is clearly scifi license in there, with Angus's innovative drill. But you just wait, mister - someday someone will invent a drill bit just like that, then I will have the last laugh.