A.A. Huber & Sons, Inc.
Aaron York’s Quality Air
ABB, Inc.
ABB Enterprise Software
Abel Construction Company
Absolute Fire Control, Inc.
Absolute Water Technologies
AC Corporation
Accent Coatings
Access Services Inc.
Accutek Radar Imaging
Adams Cooling Tower Construction, Inc.
A-1 Door Specialties, Inc.
Advanced Micro-Electronics Inc.
Advanced Vacuum Services
Aerotek, Inc.
AES Clean Technology
AIMS Companies
Allen Blasting and Coating
Allied-Ott Petroleum Equipment
Allied Valve
Alltech Wiring & Controls Inc.
All Trade Construction
All Trades Staffing Inc.
ALM Environmental Consulting LLC
Alpha Engineering
Alpha Mechanical
AlphaJak Sealcoating LLC
Alpine Power Systems
Alternate Source, Inc.
Alternative Cleaning
Altima Diagnostic Imaging Solutions, Inc.
Alt & Witzig Engineering, Inc.
Amato Elmore Construction
American Efficiency Services
American Floor Covering, Inc.
American Forest Management
American Structurepoint Inc.
American Track
Anchor QEA, LLC.
Apex Companies, LLC
Applied Coatings Indy
Applied Engineering Services Inc.
Applied Technical Services
APS Solutions – American Professional Staffing Services
Arc Energy Services, Inc.
Arcadis U.S. Inc.
Architectural Product Sales & Installation, LLC
Architectural Walls, Inc.
Arsee Engineers
ARTEC Environmental Monitoring
Artekna Design
Arvos Ljungstrom LLC
ASAP Controlled Air Testing
Asheville Fence Co. Inc.
Assa Abloy
Atlantic Plant Maintenance
Atlas Copco Compressors. LLC
A&T Mechanical LLC
Automated Doors & Access Inc.
Automated Logic Contracting Services
Automatic Door & Window
B&E Painting, Inc.
B&L Sheet Metal and Roofing A Tecta America Company
4M Building Solutions
Babcock Power
BAC 4 IN/KY Apprenticeship & Training Program
Bagwell Fence Company, Inc.
Bahnson Inc.
Barrier Cable Systems, Inc.
Basler Electric Company
Bay Industrial Safety Services, Inc.
BBC Pump and Equipment Co, Inc.
Bell Plumbing Service
BH LTC Consulting
Biancofiori Masonry Inc.
BIRS, Inc.
Blackmore & Buckner Roofing
Blair Duron Restoration
Blankenship Associates
Blasting Solutions, Inc.
Block Imaging International, Inc.
Blue Phoenix
Bluewater Consulting Services, LLC
BMS CAT of North Carolina
Boyd Company
Boyle Construction Management Inc.
Brandeis Machinery
Breeden Electric
Briggs Creative Services, LLC
Brightview Landscapes LLC
Brinley & Brinley LLC
Brock Contract Services
Brock Services
Building Associates, Inc.
Building Envelope Allies
BuildSmart Construction
Bullseye Fence
Camlin Inc.
Cardinal Civil Contracting
Cardno, Inc.
Career Match Solutions, LLC
Carolina Air Solutions
Carolina Tractor
Carpenters Union Local 216
Carpenters Union Local 224
Carpenters Union Local 232
Carpet Concepts Inc.
Carson Design Center Associates. Inc.
Cascade Drilling
C&B Marine
CCS Construction Staffing
CECO Concrete Construction
Cemtek Systems Inc.
Central Florida Locating, Inc.
Central Indiana Hardware
Central Indiana Insulation
Central Rent-A-Crane, Inc.
Chungso Cleaning
Civil & Environmental Consultants, Inc.
Classic Stone LLC
Clean Harbors Environmental Services, Inc.
CleanAir Engineering
Cleansuite Services
Cleveland-Cliffs Rockport Works
Clyde Industries Inc.
CM Buck & Associates
CNC Foundations Inc.
Coatings 2000
Colliers Engineering & Design
Collier Geophysics
Collins United Flooring
Comfort Systems USA MidAtlantic
Commercial Trade Source
Commonwealth Safety, Inc.
Concare Inc.
Concord Construction, Inc.
Condon Fire & Safety
ConeTec, Inc.
Conserv, Inc.
Consolidated Metal Services, Inc.
Construction Contractors, Inc.
Construction Engineering Solutions, LLC
Construction Resource Services LLC
Construction Solutions Group, Inc.
Consulting Management Inspection Design Inc. (CMID Inc.)
Core Mechanical Services, Inc.
Coreslab Structures
Cornerstone Companies, Inc.
Crane Excavating
Crawford Sprinkler Company of Raleigh
Crisp & Crisp, Inc.
CR Mechanical
C.R. Meyer & Sons Co.
CRM Excavating LLC
Crown Corr
Culy Contracting
Curry Construction
Cushman & Wakefield
Danco Roofing Services, Inc.
Daniels Health
Danville NECA IBEW Electrical JATC
Data Center Solutions, Inc.
Data Centric Solutions Inc.
Daviess County Tire & Supply
Davis & Associates, Inc.
DC Construction Services
Delaware Elevator Inc.
Desco Floor Systems
Dig-It Inc.
Digital Watchman LLC
DOM Enterprises LLC
Don Purdy Masonry LLC
Door Control Services
Door Equipment Company, Inc.
Dorsey Excavating Inc.
Doubek and Associates
DSDEXC / D&S Excavating
Dubois County Tire & Supply
E.E. Equipment Company
E. Caligari and Son, Inc.
EA Outdoor Services LLC
EAC Solutions Group
Eastern Glass & Aluminum
Eastern Solutions, LLC
Eaton Corporation
Eberhardt Heating & Cooling
Eco Express, LLC
Eco Infrastructure Solutions
EDA Inc.
Egenolf Industrial Group
Electrical Enterprises, Inc.
Elite Chemistries
Elite Mechanical Services (EMS)
Emerald Transformer
Emerson  PWS
Empire Refractory Services of Indiana
Energy Service Group International Inc.
Energy Technologies Inc.
Enertech Electrical, Inc.
Engineered Pump Services, Inc.
Enspect, Inc.
Envelop Group
Environmatics Inc.
Environmental Assurance Co Inc.
Environmental Resources Management Inc.
ERS Wireless
ESP Associates, Inc.
ET Ferrell & Son
Evoqua Water Technologies / Xylem
Evens Time, Inc.
Evergreen Medical (ARTEC Environmental)
Executive Management Services
Exela Technologies
Express Employment Professionals
Exterior Solutions Plus, Inc.
Ferrer Mechanical Services
Fetters Construction, Inc. dba FCI Construction
Fire Door Solutions
Firetech Sprinkler & Backflow Service
Fleming Engineering, Inc.
Flexware Innovation, Inc.
Fluence Energy
Frey Drainage & Excavating, LLC
Fuller Engineering Co., LLC
Furniture Management Solutions
G&L Corporation
GCI Slingers LLC
Gecko Robotics
Geo Mechanical Insulation, Inc.
Geo-Synthetics Systems, LLC.
Geologic Exploration, Inc.
George E. Booth
George’s Concrete Pumping Services, Inc.
Geotill Inc.
Geyer Fire Protection LLC
Gibson Painting Group
Gillmann Services
Globe Asphalt Paving Co., Inc.
Glue-Lam Erectors
Graber Construction Inc.
Grady Brothers, Inc.
Great Lakes West
Gripp, Inc.
Ground Penetrating Radar Systems, LLC
Ground Water Treatment & Technology
Grunau Fire Protection
Guidon Design
Gulf Equipment Corp.
Guy M. Turner, Inc.
Haley & Aldrich, Inc.
Hartford Glass Co. of Fort Wayne, Inc.
Heartland Solutions Corp.
HIS Constructors
HI-TEMP Refractories
Hobart Services
Holston Glass Company
Hoosier Glass Co., Inc.
Hoosier Sign Guy
HST Inc.
IBEW Local 538
IDO Incorporated
IMEDCO America Ltd.
IMEG Corp.
Indiana Laborers
Indiana Operators 103
Indiana Operators 181
Indiana Plan
Indy Edge Concrete LLC
Indy Excavating and Utilities LLC
Innovative Control Systems, LLC
Innovative Environmental Technologies, Inc.
InPwr, Inc.
Insulating Services, Inc.
Iris Power/Qualitrol
Irving Materials, Inc.
Isolated Power Specialist

Jack Wayte Construction Co., Inc.
JAH Power Services, Inc
JAM Excavating Services, Inc.
James Babcock Inc.
JM Test Systems, LLC
JMT Landscape Group LLC
John Crane
Johnson Commercial Mowing, Inc.
JS McCullough Excavating LLC
Keen Plumbing Company
Keeler-Webb Associates
Kemna Restoration & Construction, Inc.
Kenny Glass, Inc.
Kent Power
Kentucky Welding Institute
KEP Electric
Kleinschmidt Group
KMachine Industrial Services
KNL Supply Group LLC
Krauter Equipment Company, Inc.
Kurita America Inc.
KW Custom Controls
Kwest Group
L&B Country Gardens, Inc.
L&L Excavating
Laborers Union Local 216
Layne Christensen Company
Leak Detection Services, Inc.
Legacy Heat Treatment, LLC
Levacs Techical Services, LLC
Lewis Testing Services, Inc.
Lewis Tree Service, Inc.
Light-Crete Products & Services, Inc.
Lithko Contracting LLC
Lovewell Fencing, Inc.
LT Metal Masters
M P Kuhn Insulation LLC
M&C Concrete Company
M&R Geotechnical Services
M&W Drilling, LLC
MacAllister Rentals
Maher Electric, LLC
Mainstream Commercial Divers
Majestic Stone Imports
Mammoth, Inc.
Manor Brothers Concrete Work, Inc.
Marcor Purification / Evoqua Water Technoloies
Marine Solutions, Inc.
Markey’s Audio-Visual Inc.
McCool Plaster & Drywall, Inc.
McFarland Construction
McIntyre Bros.
McKim & Creed, Inc.
Measurement Solutions Systems & Services
Mechanical Dynamics & Analysis LLC
Mellene Servies, LLC
Merritt Contracting, Inc.
Metro Elevator Co., Inc.
Mettler-Toledo AutoChem, Inc.
MER Commercial Driving
Meyer & Najem, Inc.
MG Landscape & Irrigation
MH Equipment
Mid America Elevator
Mid-America Dynamics, Inc.
Mid-Atlantic Drilling, Inc.
Midwest Architectural Solutions
Midwest Decorating Co., Inc.
Midwest Firestop, Inc.
Midwest Garage Doors
Midwest Mole, Inc.
Midwest Remediation Inc.
Midwest Security Services, Inc.
Midwest Specialties LLC
Midwest Turbine Inspection & Blast Cleaning
Miles Printing
Millennium Sounds Inc.
Minutemen Staffing
Modern Drywall
Modern Renovations
Morningside Group, Inc.
Mosaic Engineering & Consulting
M.P. Kuhn Insulation, Inc.
Mr. Green Jeans Landscape & Irrigation
MRGeo Geotechnical Services
Mullay, LLC
Muller Welding Company, Inc.
Myers Engineering, Inc.
MZ Corp
7NT Engineering, LLC
Nadler Electrical Contracting, Inc.
National Glass & Hardware LLC
Nations Roof of Indiana
NCW – National Construction Workforce
Neat and Clean Janitorial Services, Inc.
Nelson Insulation Co.
New River Electrical Corp.
Newkirk Electric Associates, Inc.
Nix Companies
Noble of Indiana
Northstate Utility Locating, Inc.
NWL, Inc.
Nycom Inc.
O&D Bonilla Framing, LLC
OfficeWorks Services LLC
Olds Firestop & Protection
On Demand Staffing
OneStep Environmental Inc.
Ortman Drilling Inc.
Osla Construction, LLC
Otis Elevator
Ott Equipment Service, Inc.
Outdoor Environments Group
P&C Prime
Pace Analytical Services
Paradise Plantscapes
Parks Drilling Company
Patriot Automatic Doors
Patriot Concrete Cutting, LLC
PCI Consultants, Inc.
Peaker Services Inc.
Peerless Midwest
Performance Fire Protection
Performance Managed Construction, Inc.
Per Mar Security Services
Pevco Systems International, Inc.
Phoenix Process Company
Pickett and Associates, Inc.
Pioneer Industrial Corporation
Pittsburg Tank & Tower
Planes Moving & Storage, Inc.
Poindexter Excavating, Inc.
Pond & Company, Inc.
Powell Electrical Systems, Inc.
Powell Industries, Inc.
Powered Compressors & Supplies
Precision Chemical, LLC
Precision Wall
Preferred Pump, LLC
Preferred Insulation, Inc.
Prime Connected
Professional Concrete Cutting & Drilling
Professional Garage Door Systems, Inc.
Project Associates Inc.
Protech Fire Inc.
Purchasing & Parts Solutions Co., Inc.
Pyramid Design and Construction Co.
Qal-Tek Associates
Qualitrol Company LLC
Quality Conveyor Solutions
Quality Fire Protection
Quality Machine & Welding Co., Inc.
Quality Walls and Ceiling, Inc.
Quest Safety Products Inc.
Radiation Service of Indiana
R-Tech Solutions Inc.
R.A.S.K. & Associates, Inc.
Refractory Engineers, Inc.
Reliable Electric
Reliable Source Talent
Richard Catlin & Associates, Inc.
Richie Fence Builders, Inc.
RJE Business Interiors
RMG Erectors and Constructors of Montana LLC
RMS Energy
RMS Safety
Roofers Local 42
Ross Lawns and Landscaping
Roudebush Grading
RPM Solutions LLC
RPS Composites Virginia, Inc.
Rusty’s Animal Control LLC
S&G Excavating, Inc.
S&ME, Inc.
Safeguard Solutions
Safeway Moving Systems
Sargent & Lundy
Sargent Electric
SAVvy Engineering LLC
SBM Management
SBS- Mechanical Systems Inc, (MSI)
Scenic Construction Services
Schindler Elevator
SCS Mechanical Inc.
Secured Site Services LLC
Securitas Security Services
Security Automation Systems
Sentry Safety Services, Inc.
Sewell Contractors
Shermco Industries
Shoemaker Motion Picture Co., LLC
Shredding & Storage Unlimited, LLC
Sidewinders Advance
Siemens Healthineers
Siemens Industry Inc.
Sign Craft Industries, Inc.
Silver Bridge Excavating, LLC
Silver Knight Logistics LLC
Smith Excavating, LLC
Sodrel Truck Lines
Solar Concepts, Inc.
Southeast Interior Systems
Southeastern Surveying & Mapping Corp.
Space Management Installations, Inc.
Spec Solutions, LLC
Spectra Tech, LLC
Sport Graphics
Stahura Conveyor Products, Inc.
Stars & Stripes Cleaning, LLC.
Stericycle/Shred It
Stoneworks Enterprises, LLC
Structure Resources LLC
Summit Design and Engineering Services
Summit Mechanical, Inc.
Sun Glass and Door Co.
Superior Environmental Solutions
Superior Indutrial Maintenance Company, LLC.
Synthesis Incorporated
Synthetic Materials
System One Holdings, LLC
T2 UES Inc.
Talent Logistix
T.C. Holzen, Inc.
Team Industrial Service
TEC Industrial, LLC
Tech Systems, Inc.
Technifab Products Inc.
Technical Environmental Solutions, LLC.
Terracon Consultants, Inc.
Tex Tenn, Inc.
The AME Group
The Exhibit House
The Green Gang, Inc.
The John R. McAdams Company
The Kleingers Group
The Mannik & Smith Group, Inc.
The SEFA Group
The Sign Group Incorporated
Thermal Supply Fire Stop Systems, LLC
Theta Gamma Technologies LLC
Toshiba Americas Energy Systems
Trachte, LLC
Tradesmen International
Trans-Cycle Industries of Ohio, LLC
Triangle Asphalt Paving
Trinity Safety Group
Trinity Tower and Coil Cleaning, Inc.
Tri-State Fire Protection, Inc.
Tri-State Forestry Services, Inc.
Turnkey Instrument Solutions, Inc.
Tuzenew Technical Services
Thyssenkrupp Elevator
Underwood Machinery Transport, Inc.
Unique Quality Construction
United Conveyor Corporation
United Rentals
United Technical Support Services
Utilitra LLC
Utility Asset Buyers LLC
Utility Safety & Design Inc.
V3 Companies, LTD.
V24 Staffing
Vasey Commercial
Vaughn Industries, LLC
VEI Protective Services
Veolia Water Technologies & Solutions
Veracity Technology Solutions, LLC
Verkler Inc.
Veteran Crane Construction
Vision Painting
Votaw Electric, Inc.
VS Engineering
W.A. Kendall and Company, LLC
Wallace Construction, Inc.
Weas Engineering, Inc.
Weihe Engineers
West Contracting, Inc.
White Construction
Williams Electronics
Williams Scotsman
Wise Building Solutions
Wood Environmental & Infrastructure Solutions
Wrapcision Wraps & Graphics
Xceed Electric, Inc.
Xcel Clean of Indiana
Yolanda Services LLC DBA GGG Labor Services