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) local deli / that remained (excuse me Mr Gershwin, I need another dime) standards of yesterday and now / good times, bad times to you all and have you seen your mother baby, balling in the alley" 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.