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
Hot Topic $122 million. However, the company received a $140 million counter-offer from GameStop, which Hot Topic did not choose to exceed. On October 14, 2015, Hot Topic launched BoxLunch, a gift and novelty retail store. For every $10 spent, a meal is donated to a person in need. The company sponsored the 2004 Ozzfest concert tour, the 2005 through 2007 Sounds of the Underground tour, the 2008 Taste of Chaos tour, and had a stage at and sponsored the 2008 and 2009 Rockstar Energy Drink Mayhem Festival tours. The company went on to sponsor Black Veil Brides 2014 Black Mass tour