**Meet the editors**

Andrew Bunger is an Assistant Professor in the University of Pittsburgh's Department of Civil and Environmental Engineering. He recently joined the University of Pittsburgh after spending 10 years in Melbourne, Australia working in the Geomechanics Group within the Commonwealth Scientific and Industrial Research Organisation (CSIRO). His research interests include the mechanics of hydraulic fractures, coupled fluid-shale interaction, and the emplacement dynamics of magma-driven dykes and sills. He holds a PhD in Geological Engineering from the University of Minnesota.

Since October 2009, John McLennan has been a USTAR Associate Professor in the Department of Chemical Engineering at the University of Utah. He has been a Senior Research Scientist at the Energy & Geoscience Institute and a Research Professor in the Department of Civil Engineering at the University of Utah, since January 2008. He has a Ph.D. in Civil Engineering from the University of Toronto, in 1980. He has thirty years of experience with petroleum service and technology companies. He worked nine years for Dowell and Dowell Schlumberger in their Denver, Tulsa and Houston facilities. Later, John was with TerraTek in Salt Lake City, Advantek International, in Houston, and ASRC Energy Services in Anchorage. He has worked on projects concerned with subsurface energy recovery in a variety of reservoir environments, in domestic and international settings.

Prior to joining CSIRO in 1989, Rob Jeffrey worked for Dowell Schlumberger, working on hydraulic fracturing and specifically fracturing of coalbed methane wells. He continued with this research interest at CSIRO and has run a range of projects investigating hydraulic fracture mechanics in coal and in naturally fractured orebodies. Rob was instrumental in introducing hydraulic fracturing to the mining industry for cave inducement and preconditioning of rock masses and this technology is now being used at mines in Australia and Chile. He is an expert on hydraulic fracture growth in naturally fractured rock as applied to oil and gas stimulations, preconditioning of mining orebodies and hot fractured rock reservoirs.
