I only took a peek at the table of contents in the pdf you linked but it's wicked interesting

LHoE was the first I had heard about energy generating buildings and the mudflood so it's very interesting indeed to see it explored elsewhere in depth and by named people with credentials

Random thought but ever wonder if the Tartaria and tartar supposedly with giants and advanced technology has anything to do with the Greek gods and banishment of titans to Tartarus? Could possibly be why we've done all we can to wipe away their memory. That and the old world tech that doesn't rely on oil