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
More Hot Rocks (Big Hits & Fazed Cookies) More Hot Rocks (Big Hits & Fazed Cookies) More Hot Rocks (Big Hits & Fazed Cookies) is a compilation album by the Rolling Stones released in December 1972 on London Records. The album was a follow-up to the hugely successful "Hot Rocks 1964–1971". When "Hot Rocks 1964–1971 "proved to be a big seller, there was never any doubt that a successor would follow. However, initially—with Andrew Loog Oldham getting involved—the project was to feature previously unreleased (or more accurately, discarded) material and be titled "Necrophilia". Artwork was prepared and the album made it as far as the mastering phase when