Energy in South Australia and trap in the deeper heat. Due to the low permeability of granite, the hot rocks must undergo hydraulic fracturing and be stimulated to allow a flow of water through the system to produce energy. This heat is slowly conducted to shallower rocks near the surface. Petratherm propose developing the geothermal energy in the more permeable sedimentary rocks that overlay the hot granite, a process called Heat Exchange Within Insulator (HEWI). While somewhat cooler, in many cases they do not require hydraulic fracturing. It is estimated that one percent of geothermal energy shallower than five kilometres below the earth's surface
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