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ABB Lummus Global

Aker Gulf Marine

Akzo Nobel

Albert Garaudy

Alliance Engineering / Wood Grp

Ameripol Synpol

Apex Engineering

Arco Chemical

Atlas Engineering

Bassell U.S.A.

Bechtel Corp.

BEI Engineering

Benham Group

BES Engineering

Boise Cascade

Borden Chemical

CCH Equipment

CDI Engineering Group

Celanese LTD Chemical Group

Chemical Waste Management

Chevron / Phillips

Chicago Bridge & Iron

Commonwealth E & C

Conoco / Phillips

Contech

Crown Central Petroleum

Diamond Shamrock

Diversified Projects

Dow

Dresser Rand

Duratherm

DX Services

Dynegy

Eagle Pro Engineering

El Paso Natural Gas

Enercon

Englobal

Enterprise Products

Epcon Engineers / Progix

Equilon

Equistar / Lyondell

Excel Engineering

Exxon / Mobil

Firestone

Fishbone Solutions

FMC

Foster Wheeler

Fru-Con

G.E.

GDS Engineers / SNC Lavalin

Global Industries

Goodyear

Gulf Copper

Gulf Interstate Engineering

Halco / National Oil

Haltermann

H&M Design

Honeywell

CB&I / Howe Baker

Huntsman LLC

IMC Agrico

Imperial Holly Corp.

Impulsoria

Inland Offshore Co.

Intl. Specialty Products

Jacobs Engineering

John Crane Lemco

John Wood Group

JWP Advanced Technologies

Kellogg Brown & Root /

Halliburton

Koch Pipeline

Kvaerner Process

Lockwood Greene Engineers

Lubrizol

Lyondell / Citgo

CB&I / Matrix Engineering

Melamine Chemical

Monsanto

Montell / Basell USA

Motiva / Equiva

Mustang Engineering/ Wood Grp

National Structural Engineering

NCRA

Neches Engineers

N.M. Wood Group

Noell

Northern Natural Gas

NSB Offshore

Occidental Chemical Corp.

Odfjell Terminals

Offshore Specialty Fabricators

Onyx Engineering

Optimized Process Design

Oxy Vinyls

Parsons Energy & Chemical

Pasadena Refinery

Paton Controls

Payne-Huber

PCI Engineeing

PCS Nitrogen

Petrocon Engineering / RPM

Pinnacle Engineering

Polaris Engineering

Principal Technology Engineering

P.C.E.

Phillips

Pride Intl.

Raytheon E&C Inc.

Recon Engineering

Reynolds Metals

Richard Design Services

RMT / Jones & Neuse Inc.

Rolls-Royce Energy Systems

Sasol NA

Saudi Aramco / Motiva

Schlumberger

Schmart Engineering

Shaw Group

Shell / Motiva

Sinclair Oil Corp.

SNC Lavalin

Stover & Assc.

Syngenta

Systech Inc.

Targa Resources

Taylor & Hill

Texaco

Texas Petrochemicals

TDI Halter

Technip USA / CoFlexip

Total / Atofina

Triad Engineering

Triad Nitrogen

Turn Key Specialists

Unifield Engineering

Universal Ensco Inc.

Unocal Corp.

URS Corp.

Valero Refining

Vallen Safety & Supply

Ventech Engineers

Westlake Petro Chemicals Group

Williams Olefins

Wood Group

Worley Intl.

Wynn Corp.