Clients
- A & M Engineering
- Access Midstream Partners, L.P.
- ACME Foundry
- ACME Foundry, Inc.
- ACS - Advanced Combustion Specialists
- ADA Carbon Solutions
- ADA-ES, Inc.
- Admin Internal jobs
- AEP
- AES Shady Point
- AES Wolf Hollow LP
- Afton Generating Station
- Air Compliance Consultants, Inc.
- Air Liquide
- Air Products
- Air Systems Testing, Inc.
- Aires Consulting
- AirKinetics
- Alabama Municipal Electric Authority
- Alberici Constructors & Stanley Consultants
- Albermarle Corporation
- Alcoa
- Alphabet Energy, Inc.
- Alstom
- Altech Environment USA
- American Airlines
- American Castings
- American Central Gas
- American Gypsum
- American Power Group, Inc.
- Ameristar Fence Products
- AMP-Cherokee
- Ana Lab Corporation
- Anadarko Gathering Company
- Anadarko Petroleum Corporation
- Ana-Lab Corporation
- Anchor Glass
- APAC Central, Inc.
- Apex Companies, LLC
- Applied Controls Corporation
- Approach Resources Inc.
- APR Energy
- Aqua Turbo X LLC
- Aquaterra Environmental Solutions, Inc.
- Aquila MEP Clarksdale Power
- Aquila, Inc.
- Ardagh Glass Inc.
- Arizona Electric Power Cooperative
- Arizona Public Service
- Arkansas Electric Coop Corp
- Arkhola
- Armstrong World Industries
- Arnold & Porter
- Arrow Engine Company
- Ash Grove Cement Company
- Ashland
- Ashton Contractors
- Associated Electric Cooperative, Inc.
- Associated Mechanical, Inc.
- Astoria Generating Co. Acquisitions, LLC
- Atkins-Benham
- Atlas Energy, L.P.
- Atlas Paving
- Atlas Pipeline Mid-Continent WestOK, LLC
- Atlas Resource Partners, L.P.
- Babcock & Wilcox
- Baker Hughes
- Balon Corporation
- Barlow Operators
- Barlow Projects, Inc.
- Bartlett-Collins
- Basin Environmental & Safety Technologies
- Bayswater Peaking Facility, LLC
- BE&K Construction Co.
- Bear Creek Environmental
- Bechtel
- Bellco Materials
- Bellco Materials, Inc.
- Benham Group
- Big Iron
- Big Sandy Peaker Plant, LLC
- Bio Town Ag, Inc.
- Black & Veatch
- Black Hills Corporation
- Blackhawk Station
- Blackshare Environmental Solutions
- Bluestem Pipeline, LLC
- BlueStone Natural Resources II, LLC
- Bluewater Energy, Inc.
- BM2
- BMZ, Fresno Power Partners, J.V.
- Boardwalk Field Services
- Boardwalk Pipeline Partners, LP
- Bobcat Gas Storage
- Boral Brick, Inc.
- Border Steel
- Borger Energy Associates, LP
- Bosque Power
- BP North America Gas SPU
- Brazos Electric Power
- Brazos Valley Energy, LP
- Broce Construction Co. Inc.
- Bryan Texas Utilities
- Burnham Commercial
- Burns & McDonnell
- Buzzi Unicem USA
- C2i, Inc.
- Cabot
- Callidus Technologies
- Calpine
- Cameron-Cole, LLC
- Cameron's Compression Systems
- Cantera Natural Gas, LLC
- Capitol Aggregates Inc.
- Cardinal Engineering
- Cardinal FG Company
- Cardinal Midstream LLC
- Caribbean Industrial Research Institute
- Carville Energy, LLC
- Catalytic Combustion
- Catalytic Industrial Group
- Caterpillar Inc.
- CB&I
- CED Operating Co., LLC
- CEM Service Group, Inc.
- CEM Solutions
- CEMEX
- Cemtek Environmental Inc.
- Cemtek Systems Inc.
- Cenovus Energy Inc.
- Central Crude, Inc.
- Central Mississippi Generating Co., LLC
- Central Plains
- Central Power Systems
- CEP Mid-Continent, LLC
- CER-Colorado Bend Energy Partners LP
- CER-Quail Run Energy Partners LP
- CF Industries (Terra Nitrogen)
- CH2M Hill
- Chemtrade Refinery Services, Inc.
- Chesapeake Energy Corporation
- Chesapeake Operating
- Chevron Energy Solutions Company
- Chillicothe Municipal Utilities
- Choctaw Generation
- Cimarex Energy
- Cimarex Energy Co of Colorado
- Cimarron Energy Inc.
- Cinergy Investments, Inc.
- CISCO
- City of Ames, Iowa
- City of Austin
- City of Butler, MO
- City of Chanute, KS
- City of Coffeyville
- City of Cushing
- City of Grand Island Utilities
- City of Hastings
- City of Lakin
- City of Lamar, MO
- City of Las Vegas
- City of Russel
- City of Springfield, MO
- City of Stillwater Utilities Authority
- C-K Associates, LLC
- CK Environmental, Inc.
- Clatskanie People's Utility District
- Clean Air Eng.
- Clean Dried Processing
- ClimeCo
- CMI Energy
- CMS Continental
- Cogentrix
- Colorado Energy Management
- Colorado Springs Utilities
- Colorado Ventures Ltd.
- Commercial Metals Company
- Commonwealth Chesapeake Co. LLC
- Compressco, Inc.
- Compressor Systems, Inc.
- ConocoPhillips
- Conoco-Phillips
- Consolidated Asset Management Services
- Corix Utilities USA
- Cottonwood Energy
- Covanta Energy
- Coyote North Ltd.
- CP Kelco
- Crestwood L.P.
- Crosstex Energy Services, L.P.
- Cummins Southern Plains, LLC
- David's Discount Tires
- DCI Industries, Inc.
- DCO Energy, LLC
- DCP Midstream, LP
- DeDietrich Boilers
- Deflagration Energy
- Delphi Catalyst
- Devon Energy Corporation
- Diamond Offshore
- Direct Energy
- Dogwood Energy Facility
- Dogwood Energy LLC
- Dominion
- Dominion E & P
- Dresser-Rand
- DTE Energy Resources
- Duke Energy
- Duke Energy Field Services
- DuPont
- DuraCoatings
- Durag, Inc.
- Dyno Nobel Inc.
- DynPar, LLC.
- EA Engineering
- Eagle Materials
- Eagle Rock Energy
- Eagleridge Operating, LLC
- East Jordan Iron Works
- East Kentucky Power Coop
- ECCI
- EDG Power Group
- E-J Electric Installation Co.
- El Dorado Energy
- El Paso Electric Company
- Emerald Power Corporation
- Emerald Power Plant Services
- Emergency Power Systems, Inc.
- Enbridge
- Enbridge/Midcoast
- Enercon Services
- Energy Development
- Energy Developments, Inc.
- Energy Recovery Operations
- Energy Transfer Company
- Enertec, Inc.
- Engelhard Corporation
- Engineering Technology Inc.
- Enginuity
- Enogex, Inc.
- ENSR International
- Entergy
- Enterprise Products Company
- Enterprise Products Operating LLC
- Entropy, Inc.
- ENVIRON International Corp.
- Environex, Inc.
- Environmental Concerns Inc.
- Environmental Engineering Solutions
- Environmental Safety, Inc.
- Environmental Systems Corp
- EOG Resources
- EP Energy E&P Company, L.P.
- Essential Power
- EST
- Ethos Energy
- Eurecat US
- Eureka Hunter Pipeline, LLC
- EVRAZ North America
- Exelon Corporation
- Exterran Energy Solutions, L.P.
- Extraction Oil & Gas
- F&S Power Corporation
- Farmland Industries Inc.
- Farrand Engineering
- Fibrominn LLC
- Fishbeck Thompson Carr & Huber
- Flatrock Engineering and Environmental
- Florida Power and Light
- Fluor Constructors
- Flywheel Energy
- Forney Corporation
- Fortistar Methane Group
- FPL Energy Marcus Hook, L.P.
- Frontera Generation, LP
- Frontier El Dorado Refining Company
- FRU-CON Construction Corporation
- FTS International
- Fuchs Lubricants Co.
- G.F.S. LLC
- Gardner Denver
- Garland Power & Light
- GE Aircraft Engines
- GE Energy
- GE Energy Services - PA
- GE Oil and Gas
- GE Packaged Power Systems, Inc.
- Gemma Plant Operations
- Geographics, Inc.
- Georgia-Pacific, LLC
- GeoStat Environmental
- Gerdau Ameristeel
- Gilbert Southern Corporation
- Glass Design, Inc.
- Glover and Associates
- Golden Pass LNG Terminal LLC
- Goodrich Petroleum
- Google Inc.
- Grand River Dam Authority
- Green Air Burner Systems
- Green Country Energy, LLC
- Greenhill Materials
- Greenway Engineering
- Griffith Energy, LLC
- GSI Engineering
- GTI Catoosa
- Gudgeon Thermfire International Inc.
- Gulf Crossing Pipeline Company, LLC
- Gulf South Pipeline Company, LP
- Halliburton
- Hampton Alternative Energy Products, LLC
- Hanlon Gas Processing, Ltd
- Hanna Oil and Gas Company
- Hard Rock Hotel & Casino
- Haskell Lemon Construction
- Helmerich & Payne
- Henryetta Pallet Company
- Highgate Power
- Hiland Partners, L.P.
- Hilcorp Energy Company
- Hitachi
- HLP Engineering
- Holder Construction
- Holly Refinery
- Hoosier Energy
- HRD, Inc.
- Huber Woods
- Hunt Oil
- Hydro Aluminum
- IACX
- IAS Corp
- ICM
- Idaho Power Company
- IES, LLC
- Industrial Service Group of the Carolinas
- Industrial Technology Group
- INGENCO
- Inland Power Group
- Innospec Fuel Specialties
- Innovia Films
- InterGen
- Interplastic Corporation
- Interplastics
- Interstate Power Systems, Inc.
- Invenergy, LLC
- Iochem
- iSi Environmental
- Ispat Inland Inc.
- J.O.B. Construction
- Jacksonville Electric Authority
- Jamaica Bay Peaking Fac, LLC
- JBS Swift & Co
- Jenbacher
- JL Consulting
- Johann Haltermann Ltd.
- John Zink Company
- John Zink Company, LLC.
- Jones LG, LLC
- J-W Operating Company
- J-W Power Company
- Kahuna Ventures, LLC
- KAL Energy Inc.
- Kane Environmental
- Kansas City BPU
- Kansas City Power and Light
- KBR
- Kelson Energy
- Kerns Construction, Inc.
- Keyspan
- Kiewit
- Kimberly-Clark Corporation
- Kinder Morgan, Inc.
- Kings River Conservation District
- Kior, Inc.
- Kiowa Power Partners, LLC
- KMC Thermo, LLC
- Koch Fertilizer Enid, LLC
- Koch Hydrocarbon Company
- Koch Industries
- Koss Construction
- Lafarge
- Laron, Inc.
- LD Construction
- Lea Power Partners
- Leaf River Energy Center, LLC
- Lean Flame Inc.
- Leed Fabrication Services, Inc.
- Lehigh Cement Company LLC
- Leidos
- Lesair Environmental Inc.
- LG Constructors
- Lhoist North America
- Lime Rock Resources
- Linn Energy
- Logic Energy Solutions, LLC
- LongAcre
- Lordsburg Generating Station
- Louisiana Energy and Power Authority
- LS Power
- Lubbock Power & Light
- Lumen Energy
- Luminant Generation Company
- Luna Energy Center
- LWB Refractories
- M2 Fairplay, LLC
- Magellan Midstream Partners, L.P.
- Malarkey Roofing Products
- Marathon Oil Company
- MarkWest
- Martin Machinery, LLC
- Mayflower Energy
- McCommas LFG Processing Partners LP
- McHale & Associates, Inc.
- Mechanical Systems, Inc.
- Medicine Hat
- Mewbourne Oil Company
- Michelin North America
- Mid America Agri Products/Wheatland, LLC
- Mid America Engine
- MidAmerican Energy Company
- Midwest Energy Emission Corporation
- Midwest Energy Inc.
- Mirant
- Miratech
- Missouri Public Utility Alliance
- Mitsubishi
- Modern Continental South, Inc.
- Molycorp Minerals, LLC
- Momentum Midstream
- Monitor Labs, Inc.
- Monitoring Solutions, Inc.
- Morris Cogeneration, LLC
- Mueller Environmental Designs
- NAEA Operating
- NAES
- NAES Luna Energy
- National Gypsum
- Navasota Odessa Energy Partners, LP
- NEPCO
- Nevada Cogeneration Associates #1
- Nevada Cogeneration Associates #2
- Nevada Division of Environmental Protecti
- Nevada Energy
- Nevada Power
- New Covert Generating Company, LLC
- New Energy Corporation
- New Harquahala Generating
- New Tech / Carr Environmental Group
- Newfield Exploration
- Newmont Nevada Energy Inv
- Nextera Energy
- NFG Midstream Trout Run, LLC
- Niska Gas Storage
- Noble Technologies Corp
- Norit Americas, Inc.
- North American Energy Services Company
- North Jersey Energy Associates
- NPN Environmental
- NRG Texas Power LLC
- Occidental Oil and Gas Corporation
- OG&E
- Oklahoma Cogeneration
- Oklahoma Gas Services
- Oklahoma Materials Recycling
- Oklahoma Natural Gas
- Oklahoma State University
- Old Dominion
- Omega Energy Consulting, LLC
- OMPA
- ONEOK Energy Services
- ONEOK Power Marketing Co.
- Oneta Power, LLC.
- Orange Grove Energy, L.P.
- Orizon Aerostructures
- OVO LLC
- Owens-Brockway Glass Container Inc.
- Oxy USA
- Pacificorp
- Panda Power Funds
- Panhandle Eastern Pipe Line Co, LP
- Panther Energy
- Paris Generation, LP
- Parsons Brinkerhoff
- PCS Nitrogen, LLC
- Peerless Mfg. Co.
- PennTex Midstream
- Pentagon Technologies
- PetroQuest Energy LLC
- Pfizer Inc.
- Phillips Petroleum
- PIC Group, Inc
- Pic World
- Pinnacle West Energy
- Pioneer Natural Resources
- Post Rock Energy
- Power Flame
- PowerSouth Energy Cooperative
- PowerTek
- PPL Generation LLC
- Prairie State Generating Company
- Pratt & Whitney
- Premier Resources
- Primenergy, LLC
- Primoris Energy Services
- Pryor Chemical Company
- PSEG Keys Energy Center
- PurEnergy Caledonia, LLC
- PVR Midstream, LLC
- PW Grosser
- QA Support, LP
- Quachita Power, LLC
- Quad Graphics
- Quantum Resources Management, LLC
- Quebecor World
- Questor Technology, Inc.
- Quicksilver Resources, Inc
- Quicksilver Resources, Inc.
- QuickWater
- QuikWater
- RAE Corporation
- Ragnar Benson
- Rathdrum Power, LLC
- Red Ball
- Red River Compression
- Reliant Energy - Astoria
- Reliant Energy - EDC
- Reliant Energy Texas Renewables, LP
- Rentech Nitrogen Pasadena, LLC
- Republic Paperboard Company
- Republic Paperboard Company, L.L.C.
- Republic Services
- RMT
- Roan Resources
- Robins & Morton
- Rockwell Automation, Inc.
- Rocky Road Power
- RRI Energy Northeast Management Co
- RRI Energy Wholesale Generation, LLC
- RSV Engineering
- Sabine Cogen, LP
- SAIC Energy, Environment & Infrastructure
- Saint Francis Health System
- Saint-Gobain Containers
- Salt Plains Storage
- Salt River Project
- Samson Companies
- SandRidge Operating, Inc.
- Schneider National, Inc.
- Schreiber Engineering, LLC
- Schreiber, Yonley & Associates
- Schwarz Paving Company, Inc.
- Sebesta Blomberg
- Seeco, Inc.
- Sega, Inc.
- SemGas L.P.
- Seneca Resources
- Shaw Constructors
- Sherwood Construction
- Shintech Inc.
- Shook LLC
- Siemens
- Sierra Research
- Sinclair Oil Corporation
- Sky Global Power One
- SM Energy
- SME Associates
- Smith Power Products, Inc.
- SNC- Lavalin
- Solar Turbines, Inc.
- Solomon Corporation
- Solvay Flourides
- Sonoco Flexible Packaging Company
- Sooner B & B
- Source Test Products, Inc.
- South Houston Green Power, L. P.
- South Texas Electric Cooperative
- Southaven Power, LLC
- Southern Power Company
- Southern Star Central Gas Pipeline
- Southwest Generation
- Southwestern Electric Cooperative
- Southwestern Energy Company
- Spectrum Systems, Inc.
- Spirit AeroSystems, Inc.
- St. Mary Land & Exploration Co.
- Stanley Consultants
- Stantec
- State Fair Community College
- State Line Gathering System, LLC
- Statoil Gulf Services LLC
- Sterling Energy
- STK - Squared Consulting, LLC
- Strata, LLC
- Strategic Environmental Compliance
- Summit Midstream Partners
- Sunflower Electric Power Corporation
- Sunoco, Inc.
- Superior Fabrication Inc
- Surface Specialties
- SWCA
- Talisman Energy
- Tall Oak MidCon, LLC
- Targa Resources
- Teledyne Monitor Labs
- Tenaska
- Tenaska Alabama II Partners, LP
- Tenaska Central Alabama Generating Stn
- Tenaska Gateway Partners, Ltd.
- Tenaska Georgia
- Tenaska Virginia Partners
- Terra Nitrogen
- Terracon Consultants, Inc.
- Texas A&M
- Texas Gas Transmission
- Texas Municipal Power Agency
- Texas Petroleum Investment Co.
- The Doe Run Company
- The Industrial Company
- Thermal Product Solutions, LLC
- Thermo Environmental Instruments, Inc.
- Third Branch Engineering
- Tinker Air Force Base
- Topaz Power Group, LLC
- Trace Environmental
- TransAlta Centralia Generation, LLC
- TransCanada
- TRC
- Triad Energy
- Trinity Consultants
- Trinity River Energy
- Triumph Energy Partners
- Troy Energy LLC
- Tulsa Technology Ctr
- TX Hydraulics
- U.S. Gypsum Co.
- Ultra Resources, Inc.
- United Conveyor Corporation
- United Sciences Testing, Inc.
- Universal Compression
- Universal Energy
- US Power Generating Company, LLC
- USA Compression
- Valerus Compression
- Vault Corporation
- Vektek
- Village of Freeport
- Vine Oil & Gas
- Viridis Energy (Texas), LP
- Walker Engineering, Inc.
- Wartsila
- Waste Management
- Weatherford
- Weldquip, Inc.
- WFEC
- Wheelabrator Air Pollution Control
- White Oak Power Constructors
- Williams
- Williams Field Services
- Williams Four Corners, LLC
- Williams Gas Pipelines Central, Inc.
- Williams Mid-Stream
- Williams Power Company, Inc.
- Williams-Texas Gas
- Williams-Transco
- Winchester Power
- Wolverine Tube
- Wood Group
- Wood Group LIT
- Wood Group Power Plant Services
- Woodville Renewable Power Project
- Woodward Iodine Corporation
- World Wide Turbines
- WorleyParsons
- WPX Energy, Inc.
- Wunderlich-Malec
- XCEL.Energy
- XTO Energy, Inc.
- Xtreme Power
- Yates Constructors
- Your Energy Saver
- Zachry Construction Corporation
- Zapata Industries, Inc.
- ZEECO, INC.
- Zephyr Environmental