A.A. Huber & Sons, Inc.
Aaron York’s Quality Air
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 Vacuum Services
AES Clean Technology
AIMS Companies
Align
Allen Blasting and Coating
Allied-Ott Petroleum Equipment
Allied Valve
Alltech Wiring & Controls Inc.
All Trade Construction
ALM Environmental Consulting LLC
Alpha Engineering
Alpha Mechanical
AlphaJak Sealcoating LLC
Alpine Power Systems
Alt & Witzig Engineering, Inc.
Alternate Source, Inc.
Alternative Cleaning
Altima Diagnostic Imaging Solutions, Inc.
Amato Elmore Construction
American Efficiency Services
American Floor Covering, Inc.
American Forest Management
American Track
Anchor QEA, LLC.
Apex Companies, LLC
APM Atlantic Plant Maintenance
Applied Coatings Indy
Applied Engineering Services Inc.
Applied Technical Services
APS Solutions – American Professional Staffing Services
Aramark
Arc Energy Services, Inc.
Arcadis U.S. Inc.
Architectural Walls, Inc.
Arsee Engineers
Artekna Design
Arvos Ljungstrom LLC
ASA ABOVETHEREST 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
B.L. Brown Construction & Excavation, Inc.
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.
Banning Engineering
Basler Electric Company
Bay Industrial Safety Services, Inc.
BBC Pump and Equipment Co, Inc.
Bell Plumbing Service
Berline Construction, Inc.
BH LTC Consulting
Biancofiori Masonry Inc.
BIRS, Inc.
BLAC Inc.
Blackmore & Buckner Roofing
Blair Duron Restoration
Blankenship Associates
Blasting Solutions, Inc.
BLC Outdoors
Block Imaging International, Inc.
Blue Phoenix
Bluewater Consulting Services, LLC
BMS CAT of North Carolina
BNF Painting, LLC.
Bonitz
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
CA Advanced, Inc.
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
CBRE
CCS Construction Staffing
CDM Smith
CECO Concrete Construction
Cemplex Group Ohio
Cemtek Systems Inc.
Central Florida Locating, Inc.
Central Indiana Hardware
Central Indiana Insulation
Central Rent-A-Crane, Inc.
Centrifugal Technologies Inc.
Cintas
Civil & Environmental Consultants, Inc.
Classic Stone LLC
Clean Harbors Environmental Services, Inc.
Clean Slate Brush Control
CleanAir Engineering
Cleansol, LLC
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 Lightning Protection
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
CORMETECH, Inc.
Cornerstone Companies, Inc.
Crane Excavating
Crawford Sprinkler Company of Raleigh
Cripe
Crisp & Crisp, Inc.
CR Mechanical
C.R. Meyer & Sons Co.
CRM Excavating LLC
Crown Corr
Culy Contracting
Curry Construction
Cushman & Wakefield
Dalpon Lawn Care
Danco Roofing Services, Inc.
Danville NECA IBEW Electrical JATC
Data Center Solutions, Inc.
Data Centric Solutions Inc.
Daviess County Tire & Supply
Davis & Associates, Inc.
DEEM LLC
Desco Floor Systems
Dig-It Inc.
Digital Watchman LLC
DLW, 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 Engineering Science and Techology, Inc. PBC
EAC Solutions Group
Eastern Glass & Aluminum
Eastern Solutions, LLC
Eaton Corporation
Eberhardt Heating & Cooling
Eco Infrastructure Solutions
EDA Inc.
EDGE Engineering & Science
Egenolf Industrial Group
Electrical Enterprises, Inc.
Elite Chemistries
Elite Mechanical Services (EMS)
Emerald Transformer
Emerson  PWS
Empire Refractory Services of Indiana
Enerfab
Energy Service Group International Inc.
Energy Technologies Inc.
Enersol LLC
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
Evaptech
Evoqua Water Technologies / Xylem
Evens Time, Inc.
Evergreen Medical (ARTEC Environmental)
Executive Management Services
Exela Technologies
Express Employment Professionals
Exterior Solutions Plus, Inc.
Falkbuilt
Fastenal
Ferrer Mechanical Services
Fetters Construction, Inc. dba FCI Construction
FieldCore
Firetech Sprinkler & Backflow Service
Fleming Engineering, Inc.
Flexware Innovation, Inc.
FloSource
Fluence Energy
Frey Drainage & Excavating, LLC
Fuller Engineering Co., LLC
Furniture Management Solutions
G&L Corporation
GCI Slingers LLC
GE
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
Gilbert J Rode & Sons, Inc.
Globe Asphalt Paving Co., Inc.
Glue-Lam Erectors
Graber Construction Inc.
Grady Brothers, Inc.
Great Lakes West
Gripp, Inc.
Groome Industrial Service Group, LLC
Ground Penetrating Radar Systems, LLC
Ground Water Treatment & Technology
Grunau Fire Protection
GSF USA Inc.
Guidon Design
Gulf Equipment Corp.
Guy M. Turner, Inc.
Haley & Aldrich, Inc.
Hartford Glass Co. of Fort Wayne, Inc.
Hannigan Building Company
Hayward Tyler, Inc.
Heartland Solutions Corp.
HIS Constructors
HI-TEMP Refractories
Hobart Services
Holston Glass Company
Honeywell
Hoosier Glass Co., Inc.
Hoosier Sign Guy
HST Inc.
Hutson Electric Holding Corp.
IBEW Local 538
IDO Incorporated
IMEDCO America Ltd.
IMEG Corp.
IMRIS
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.
IntegriTech
Iris Power/Qualitrol
Irving Materials, Inc.
Isolated Power Specialist
IWP, Incorporated
J & J Fence
JAH Power Services, Inc
Jamerson & Bauwens Electrical Contractors, Inc.
James Babcock Inc.
JD Installations LLC.

JM Test Systems, LLC
JMT Landscape Group LLC
John Crane
Johnson Commercial Mowing, Inc.
JS McCullough Excavating LLC
Keen Plumbing Company
Keeler-Webb Associates
Kenny Glass, Inc.
Kent Power
Kentucky Welding Institute
KEP Electric
Kleinschmidt Group
KMachine Industrial Services
KNL Supply Group LLC
Koenig Scale Company
KONE Inc.
Konecranes
Krauter Equipment Company, 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.
Lindbald Construction Company of Joiliet, 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
Mainland Stoneworks, 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
MEGIN
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 Maintenance and Construction, Inc.
Midwest Mole, Inc.
Midwest Remediation Inc.
Midwest Security Services, Inc.
Midwest Specialties LLC
Millennium Sounds
Millenium Torque & Tensioning, Inc.
Minutemen Staffing
Modern Drywall
Modern Renovations
Moellman Land Maintenane LLC
Morley
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.
Multicraft Fire
MZ Corp
7NT Engineering, LLC
Nadler Electrical Contracting, Inc.
Nalco
National Environmental Services Corporation
National Filter Supply, Inc.
National Glass & Hardware LLC
Nations Roof of Indiana
NCW – National Construction Workforce
NECA – IBEW Local 538 NJACT
Neat and Clean Janitorial Services, Inc.
Nelson Insulation Co.
New River Electrical Corp.
Newkirk Electric Associates, Inc.
Nix Companies
Noble of Indiana
Nooter/Eriksen
Northstate Utility Locating, Inc.
NWL, Inc.
Nycom Inc.
O&D Bonilla Framing, LLC
OfficeWorks Services LLC
Olds Firestop & Protection
OneStep Environmental Inc.
Ortman Drilling Inc.
Osla Construction, LLC
OTC Services
Otis Elevator
Ott Equipment Service, Inc.
Outdoor Environments Group
P&C Prime
P1 Construction, LLC
Pace Analytical Services
PACIV-USA, LLC
Paradise Plantscapes
Parks Drilling Company
Patriot Automatic Doors
Patriot Concrete Cutting, LLC
PCI Consultants, Inc.
Peaker Services Inc.
Penn Davis Coatings, Inc.
Peerless Midwest
Performance Fire Protection
Performance Managed Construction, Inc.
Per Mar Security Services
Pickett & Associates LLC
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.
Professional Sealants, Inc.
Project Associates Inc.
Protech Fire Inc.
Pullman
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
Remedi8 LLC
Remetronix
Richard Catlin & Associates, Inc.
Richie Fence Builders, Inc.
Riggs Painting, LLC
Riley Power, 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.
RUCKO
Rusty’s Animal Control LLC
4M Service, LLC
S&G Excavating, Inc.
S&ME, Inc.
Safeguard Solutions
Sargent & Lundy
Sargent Electric
SAVvy Engineering LLC
SBM Management
SBS- Mechanical Systems Inc, (MSI)
Scenic Construction Services
Schindler Elevator
SCS Mechanical Inc.
Security Automation Systems
Securitas Security Services
Seemless Roofing, LLC
Sentry Safety Services, Inc.
Sewell Contractors
Sheakley
ShepCo Commercial Finishes
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
Simple Security Solutions LLC
Smith Excavating, LLC
Sodrel Truck Lines
Solar Concepts, Inc.
Sonicu
Southeast Interior Systems
Southeastern Surveying & Mapping Corp.
Space Management Installations, Inc.
Spec Solutions, LLC
Spectra Tech, LLC
SSMC
Stahura Conveyor Products, Inc.
Stars & Stripes Cleaning, LLC.
Stewart
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.
Swift Air Mechanical
Synthesis Incorporated
System One Holdings, LLC
T2 UES Inc.
Taylor Wseman & Taylor
T.C. Holzen, Inc.
TCJ Mechanical, 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 Perry Group, Ltd.
The SEFA Group
The Sign Group Incorporated
Thermal Supply Fire Stop Systems, LLC
Theta Gamma Technologies LLC
TNA Sealants, Inc.
Toshiba Americas Energy Systems
Trachte, LLC
Tradesmen International
Trane
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
Universal Voice/Data
Utilitra LLC
Utility Asset Buyers LLC
Utility Safety & Design Inc.
V3 Companies, LTD.
V24 Staffing
Value Plus Engineering Solutions LLC
Vasey Commercial
Vaughn Industries, LLC
VEI Protective Services
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
William J. Ciriello Plumbing Co. Inc.
Williams Electronics
Wise Building Solutions
WM Sustainability Services
WSP USA Inc.
Xceed Electric, Inc.
Xcel Clean of Indiana
Yolanda Services LLC DBA GGG Labor Services