Hot dry rock geothermal energy Hot dry rock geothermal energy Hot dry rock (HDR) is an abundant source of geothermal energy available for use. A vast store of thermal energy is contained within hot - but essentially dry - impervious crystalline basement rocks found almost everywhere deep beneath the earth’s surface. A concept for the extraction of useful amounts of geothermal energy from HDR originated at the Los Alamos National Laboratory in 1970, and Laboratory researchers were awarded a U.S. patent covering it. Although often confused with the relatively limited hydrothermal resource already commercialized to a large extent, HDR geothermal energy is very different. Whereas
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.