Hot dry rock geothermal energy as a separate state from that of the continuum of permeable rock—just as one would consider a completely closed faucet as distinct from one that is open to any degree, whether the flow be a trickle or a flood. In the same way, HDR technology should be regarded as totally distinct from EGS. A definitive book on HDR development, including a full account of the experiments at Fenton Hill, was published by Springer-Verlag in April 2012. Hot dry rock geothermal energy Hot dry rock (HDR) is an abundant source of geothermal energy available for use. A vast store of thermal
Note from the Underground (Buffy comic) Note from the Underground (Buffy comic) "Note from the Underground" is a story arc that was originally published in "Buffy the Vampire Slayer" #47–50 by Dark Horse Comics and based on the "Buffy" television series. It was later reprinted in a trade paperback collected edition. Angel breaks Faith out of jail and the two of them travel to Sunnydale to help control chaos there. Angel, Faith, and Pike continue to look for Buffy, whilst the Slayer battles vampires in Hell. Buffy must continue her journey through Hell, and meets help (Angel, Faith, and Pike). It is up to them to