Advanced Ancient Civilizations - Results of the LAH Expeditions 2004-2011 English Translation
http://www.youtube.com/watch?v=zuAZ2HojyJY
https://www.youtube.com/watch?v=zuAZ2HojyJY
Chris Dunne is an Engineer who has worked in Egypt. He is convinced some of the machining was done using sonic equipment.
http://www.theglobaleducationproject.org/egypt/articles/cdunn-1.php