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
Notes from the Underground (creative writing paper) Sutherland agreed with James that 'everything in the paper is worth reading' but felt the newspaper was pitched too highly compared to other free newspapers. 'It might work, but I think the title is an allusion to the Dostoevsky book Notes from Underground which I suspect would probably go over the heads of most commuters.' However he did add that 'this is a very good platform for new literature, and I am all in favour of it. More power to it, I say.' Notes from the Underground (creative writing paper) Notes from the Underground is a creative writing free newspaper.