You mean his frame quarry he built using redpower that eats a 9x9 area to bedrock? Once red power is finished (main thing holding the 1.4.5 update back) it will be possible to build.
Bloody hell...Redpower? Ah man, a lot of things can't be built properly because it's not released yet. And when it is, have to start a new world to get Volcanoes and the new stuff.