Jean Pierre Houdin's internal ramps model, a quick summary (full-length vids are available online):
Great Pyramid Mystery Solved? | National Geographic
Egyptologists use high-tech software to analyze construction of Great Pyramid
physorg.com | October 21, 2008 | Sumathi Reddy and Nia-Malika Henderson
Posted on 10/21/2008 9:14:48 AM by Mike Fieschko
http://www.freerepublic.com/focus/chat/2111085/posts