Baker Hughes, Inc. ...... www.bakerhughes.com
Elliott Company ...... www.elliott-turbo.com
Foster Wheeler USA ...... www.fwc.com
Gates Corporation ...... www.gates.com
Hornbeck Offshore Services, Inc. ...... www.hornbeckoffshore.com
PennEnergy Books ...... www.PennEnergy.com
PennEnergy Research ...... www.PennEnergyResearch.com
Pennwell Corporation
Rice University ...... www.rice.edu
Unconventional Gas International ...... www.unconventionalgas.net
Weatherford ...... www.weatherford.com
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