| — | 145 Marston Street Inc. | CC4580 | Mine contractor | — |
| — | 18 Karat Inc | CSIS | Mine contractor | — |
| — | 1881 Incorporated | CT428 | Mine contractor | — |
| — | 1AM Industries | CC9336 | Mine contractor | — |
| — | 1st Choice Construction | CB7185 | Mine contractor | — |
| — | 1st Energy Electric | CC2891 | Mine contractor | — |
| — | 208 Welding LLC | CC4369 | Mine contractor | — |
| — | 21 Electric LLC | CB1790 | Mine contractor | — |
| — | 220 Trucking Company | CCLG | Mine contractor | — |
| — | 24/7 welding repair | CB1302 | Mine contractor | — |
| — | 2D Drilling & Blasting LCC | CC8842 | Mine contractor | — |
| — | 2EZ Electric LLC | CA2592 | Mine contractor | — |
| — | 2GC Electric LLC | CC9761 | Mine contractor | — |
| — | 3 B Dozer Service | CR847 | Mine contractor | — |
| — | 3 Phase Electrical Solutions | CB8651 | Mine contractor | — |
| — | 3 WAY ELECTRIC | CB7407 | Mine contractor | — |
| — | 3-B Welding | CS708 | Mine contractor | — |
| — | 3-Bar Corporation | CB7152 | Mine contractor | — |
| — | 3-Rivers, Inc. | C1ZT | Mine contractor | — |
| — | 360 welding construction and maintenance | CC4863 | Mine contractor | — |
| — | 3C welding LLC | CC7244 | Mine contractor | — |
| — | 3D Dycus Diamond Drilling | CA5894 | Mine contractor | — |
| — | 3G Plumbing & Services | CA4686 | Mine contractor | — |
| — | 4 Rivers Equipment LLC | CQ528 | Mine contractor | — |
| — | 4 Winds Contracting, LLC | CB4787 | Mine contractor | — |
| — | 45 Degree Fabrication LLC | CC9048 | Mine contractor | — |
| — | 495 Trucking Inc. | CS929 | Mine contractor | — |
| — | 4Granite Inc. | CV493 | Mine contractor | — |
| — | 4V Welding and Dozer, LLC | CB8994 | Mine contractor | — |
| — | 4XConstruction | CA7169 | Mine contractor | — |
| — | 5 D Mining & Construction Inc | CJ536 | Mine contractor | — |
| — | 6Guns, LLC | CC0548 | Mine contractor | — |
| — | 7 Peaks Paving | CC9392 | Mine contractor | — |
| — | 7 Seasons | CB5188 | Mine contractor | — |
| — | 802 Ledge Services LLC, dba Ledge Tech Drillin | CC0952 | Mine contractor | — |
| — | 93 Construction Company LLC | CC5531 | Mine contractor | — |
| — | A & A Pacific Electric LLC | CB1803 | Mine contractor | — |
| — | A & A Security Services Inc | CZKQ | Mine contractor | — |
| — | A & B Clean Team | CB9246 | Mine contractor | — |
| — | A & B Dirt Movers | CU759 | Mine contractor | — |
| — | A & K Services LLC | CC3998 | Mine contractor | — |
| — | A & M Outdoors | CC6508 | Mine contractor | — |
| — | A & P Trucking | CC171 | Mine contractor | — |
| — | A & T Trucking | C2ID | Mine contractor | — |
| — | A + Portable Restroom | CH639 | Mine contractor | — |
| — | A A A Mine Service Inc | CLAK | Mine contractor | — |
| — | A A Huber & Sons Inc | C3WR | Mine contractor | — |
| — | A B L Services Inc | CA147 | Mine contractor | — |
| — | A C Blevins Trucking Inc | CTFY | Mine contractor | — |
| — | A C E Rental & Repair Inc | CA823 | Mine contractor | — |
| — | A Crane Rental, LLC dba Anthony Crane USA | CB4696 | Mine contractor | — |
| — | A D Morton Company Inc. | CB2472 | Mine contractor | — |
| — | A E M Electric Services Corp | C8JS | Mine contractor | — |
| — | A E Steel Erectors Inc | CTRX | Mine contractor | — |
| — | A J Mcdirtt Inc | CB884 | Mine contractor | — |
| — | A M Welles Inc | CDS8 | Mine contractor | — |
| — | A Montano Company | CB0599 | Mine contractor | — |
| — | A Quick Pick Crane Service | CC5002 | Mine contractor | — |
| — | A&B Dirt Moving,LLC | CA8719 | Mine contractor | — |
| — | A&D DrillIng LLC | CH754 | Mine contractor | — |
| — | A&R Welding and Repair | CC6153 | Mine contractor | — |
| — | A&W Mechanical & Fabrication | CD669 | Mine contractor | — |
| — | A-1 DRILLING & BLASTING COMPANY | CV692 | Mine contractor | — |
| — | A-1 Drilling and Blasting | CH280 | Mine contractor | — |
| — | A-1 Florida Surveying & Engineering, Inc. | CE260 | Mine contractor | — |
| — | A-1 Scale Service, Inc. | CU109 | Mine contractor | — |
| — | A-L-L EQUIPMENT INC. | CL513 | Mine contractor | — |
| — | A-Mark Pest & Bird Management, Inc. | CD331 | Mine contractor | — |
| — | A. H. Beck Foundation Co., Inc. | CJ033 | Mine contractor | — |
| — | A. Lindberg & Sons, Inc. | CNNP | Mine contractor | — |
| — | A. Reynolds Electric LLC | CC4886 | Mine contractor | — |
| — | A.E. Ruston Electric L.L.C. | CB4259 | Mine contractor | — |
| — | A.M.S. Company, Inc. | CJ905 | Mine contractor | — |
| — | A.Reed Excavating | CB1183 | Mine contractor | — |
| — | A.T. EMMETT LLC | CIPG | Mine contractor | — |
| — | A1 Clean | CA2060 | Mine contractor | — |
| — | A1 industrial maintenance | CC9154 | Mine contractor | — |
| — | AA conveyor services | CC3189 | Mine contractor | — |
| — | Aaa Mine Service Underground | CB223 | Mine contractor | — |
| — | AAA Septic Tank Service | CA6212 | Mine contractor | — |
| — | AAE | CC8235 | Mine contractor | — |
| — | AAPCO | CC6959 | Mine contractor | — |
| — | Aaron DL Partners, LLC | CB3098 | Mine contractor | — |
| — | Aaron's Industrial Maintenance Inc. | CX185 | Mine contractor | — |
| — | AB Powers, LLC | CB7800 | Mine contractor | — |
| — | AB Projects Consulting | CC8991 | Mine contractor | — |
| — | AB Steel Inc | CA5977 | Mine contractor | — |
| — | Abate Irwin, Inc. | CB7947 | Mine contractor | — |
| — | ABB Inc. | CN312 | Mine contractor | — |
| — | Abbott Excavation | CL876 | Mine contractor | — |
| — | ABC Fire Extinguisher Sales & Service, Inc. | CN991 | Mine contractor | — |
| — | ABC Occupational Safety Service | CX019 | Mine contractor | — |
| — | ABP Engineering, LLC | CC6269 | Mine contractor | — |
| — | Abrasion Resistence Alternativ | CRMM | Mine contractor | — |
| — | Absolute Drilling Solutions,LLC | CC4342 | Mine contractor | — |
| — | AC Corporation | CY739 | Mine contractor | — |
| — | AC Technical Services, Inc. | CB2046 | Mine contractor | — |
| — | Accelerated Construction & Metal, LLC | CC0578 | Mine contractor | — |
| — | Accenture LLP | CC3063 | Mine contractor | — |
| — | Access Limited Construction | CB9572 | Mine contractor | — |
| — | AccQsource Services Inc. | CC6499 | Mine contractor | — |
| — | Accublast Explosives, LLC | CC0230 | Mine contractor | — |
| — | Acculab Inc | CPCL | Mine contractor | — |
| — | Accuracy Heating & Cooling LLC | CC9832 | Mine contractor | — |
| — | Accurate Corrosion Control | C5EU | Mine contractor | — |
| — | Ace Avant | CA7460 | Mine contractor | — |
| — | Ace construction engineering | CC7721 | Mine contractor | — |
| — | Ace Industries Inc. | CA4055 | Mine contractor | — |
| — | Ace Machine Works | CS806 | Mine contractor | — |
| — | Ace Pipe Cleaning | CEDN | Mine contractor | — |
| — | Ace Trucking Co Inc | CGUF | Mine contractor | — |
| — | Ace Welding | CB3143 | Mine contractor | — |
| — | acfm | CA6585 | Mine contractor | — |
| — | Ackerman Electric Co | CB468 | Mine contractor | — |
| — | Acme Constructors | CA1355 | Mine contractor | — |
| — | Acme Machine & Welding Co | CW1B | Mine contractor | — |
| — | Acme Pallet Inc | CA2234 | Mine contractor | — |
| — | ACME Soil Remediation, Inc. | CG319 | Mine contractor | — |
| — | Acrotech Services Inc | CNNT | Mine contractor | — |
| — | ACT Saw Cutting | CC5562 | Mine contractor | — |
| — | Actin Inc | C1QT | Mine contractor | — |
| — | Action Electric LLC | CC7650 | Mine contractor | — |
| — | Action Equipment & Scaffold Inc | CA4464 | Mine contractor | — |
| — | Action Oil | CA4071 | Mine contractor | — |
| — | Action Petroleum Co | CC044 | Mine contractor | — |
| — | Acuren Inspections, Inc. | CT852 | Mine contractor | — |
| — | ACV Environmental Services, Inc. | CB7017 | Mine contractor | — |
| — | ADA | CQ932 | Mine contractor | — |
| — | Adamah, LLC | CC5225 | Mine contractor | — |
| — | Adams Trucking Co Inc | C6MH | Mine contractor | — |
| — | Adams Trucking, Inc. | CB8672 | Mine contractor | — |
| — | ADD Equipment, Inc. | CT969 | Mine contractor | — |
| — | Adecco | CX3M | Mine contractor | — |
| — | Adelphi Construction, LC | CP787 | Mine contractor | — |
| — | Adena Corporation | CC0503 | Mine contractor | — |
| — | Adirondack Mechanical Services, LLC | CC584 | Mine contractor | — |
| — | Adman Electric Co | CUEM | Mine contractor | — |
| — | Advance Auto Parts | CB9464 | Mine contractor | — |
| — | Advance Electric Motor and Pump | CA1078 | Mine contractor | — |
| — | Advance Scale Company LLC | CB5526 | Mine contractor | — |
| — | Advanced Combustion | CA3408 | Mine contractor | — |
| — | Advanced Concrete Cutting & Coring, INC. | CB0368 | Mine contractor | — |
| — | Advanced Fire, Inc. | CB3169 | Mine contractor | — |
| — | Advanced Industrial Solutions | CC7630 | Mine contractor | — |
| — | Advanced Lining Solution, Inc. | CUSL | Mine contractor | — |
| — | Advanced Mechanical Inc. | CB7380 | Mine contractor | — |
| — | advanced mechanix inc. | CJ446 | Mine contractor | — |
| — | Advanced Metal Solutions, LLC | CC7002 | Mine contractor | — |
| — | Advanced Process Solutions, Inc. | CA1518 | Mine contractor | — |
| — | ADVANCED TIRE SERVICE, LLC | CC8064 | Mine contractor | — |
| — | Advanced WasteWater Specialists, LLC | CA3029 | Mine contractor | — |
| — | Advanced Water Well Technologies | CB9629 | Mine contractor | — |
| — | Advantage Industrial Systems, LLC | CQ841 | Mine contractor | — |
| — | Advantage Reliability Services LLC | CC3594 | Mine contractor | — |
| — | Advantage Tree Service | CC5903 | Mine contractor | — |
| — | AECOM | CA432 | Mine contractor | — |
| — | AEEC, LLC | CU208 | Mine contractor | — |
| — | AEGIS Resource Management | CA5973 | Mine contractor | — |
| — | AEI Applicators LLC | CA3028 | Mine contractor | — |
| — | Aerzen USA Corporation | CN385 | Mine contractor | — |
| — | AES Specialized Services, LLC | CC3068 | Mine contractor | — |
| — | Affco Inc | CC3L | Mine contractor | — |
| — | Affordable Welding | CE617 | Mine contractor | — |
| — | AFTERHOURS MOBILE REPAIR | CA9235 | Mine contractor | — |
| — | Agate Inc | CASB | Mine contractor | — |
| — | AGGCORP | CB1870 | Mine contractor | — |
| — | Aggregate Electric Corp | CC9908 | Mine contractor | — |
| — | Aggregate Electrical Solutions LLC | CC1102 | Mine contractor | — |
| — | Aggregate Processing INC | CV655 | Mine contractor | — |
| — | Aggregate Production Services,Inc. | CX647 | Mine contractor | — |
| — | Aggregate Resource Crushing, LLC | CC2142 | Mine contractor | — |
| — | Aggregate Resource Drilling LLC | CD829 | Mine contractor | — |
| — | AGGREGATE SYSTEMS LLC | CG400 | Mine contractor | — |
| — | AGIS Inc. | CU681 | Mine contractor | — |
| — | Aglime Sales, Inc. | CT517 | Mine contractor | — |
| — | Agri-Dynamics, Inc. d/b/a Industrial Manufacturing | CC7092 | Mine contractor | — |
| — | Ahlgrimm Explosives Company Inc | CCQF | Mine contractor | — |
| — | Ahlstrom Schaeffer Electric Corp | CX514 | Mine contractor | — |
| — | AIF Logistics | CC9427 | Mine contractor | — |
| — | AIM OF LA | CA0197 | Mine contractor | — |
| — | Air Analysis, LLC | CB0750 | Mine contractor | — |
| — | Air Capitol Recycling | CC0429 | Mine contractor | — |
| — | Air Center Inc. | CP582 | Mine contractor | — |
| — | Air Compressor Sales, Inc. | CH648 | Mine contractor | — |
| — | AIR CONTROLS-BILLINGS | CB3077 | Mine contractor | — |
| — | Air Environmental Services, Inc. | CD0226 | Mine contractor | — |
| — | Air Liquide America Corp | CE0M | Mine contractor | — |
| — | Air Mac Inc | CZDT | Mine contractor | — |
| — | Air Placement Cement Co | CK01 | Mine contractor | — |
| — | Air Products & Chemicals Inc | CBFE | Mine contractor | — |
| — | Air-Tech Heating & Air Conditioning, Inc. | CH939 | Mine contractor | — |
| — | Aircond Corp. | CP658 | Mine contractor | — |
| — | AIREKO SERVICES & INSTALLATIONS | CB0635 | Mine contractor | — |
| — | Airgas Specialty Products | CA2937 | Mine contractor | — |
| — | Airmatic Inc | CHDT | Mine contractor | — |
| — | AirSource Technologies, Inc. | CH390 | Mine contractor | — |
| — | AIS Gulf Coast Industrial | CC7490 | Mine contractor | — |
| — | AJ Goulder Electric Inc. | CA2160 | Mine contractor | — |
| — | AJC Drilling & Blasting Co | CC2563 | Mine contractor | — |
| — | AKJ Chemicals, LLC | CC1209 | Mine contractor | — |
| — | Al'S Glass Service | CSBC | Mine contractor | — |
| — | Alabama Slab LLC | CB1992 | Mine contractor | — |
| — | Alamance Electric & Welding Inc. | CV837 | Mine contractor | — |
| — | Alan D, Woodcock General Contractor Inc. | CW137 | Mine contractor | — |
| — | Alarm Control Company | CP9Z | Mine contractor | — |
| — | Alaska Aggregate Products, LLC | CN819 | Mine contractor | — |
| — | Alban Tire Corporation | CA5554 | Mine contractor | — |
| — | Albatross Ventures.net | CB1593 | Mine contractor | — |
| — | Albrightson Excavating Inc | C2ED | Mine contractor | — |
| — | Alcar Constructors Inc | CC096 | Mine contractor | — |
| — | Alcon J Industries | CC6406 | Mine contractor | — |
| — | Alex'S Tire Center Inc | C2CH | Mine contractor | — |
| — | Alexander Welding & Supply | CU333 | Mine contractor | — |
| — | Alfaro's Industrial Services, LLC | CB6065 | Mine contractor | — |
| — | Alford Drilling | CB9817 | Mine contractor | — |
| — | Alfred Palma, LLC | CZ297 | Mine contractor | — |
| — | All American Scale and Fabrication LLC | CC6052 | Mine contractor | — |
| — | All Around Industrial, Inc. | CS146 | Mine contractor | — |
| — | All Crane & Equipt Rental Corp | CBRS | Mine contractor | — |
| — | All Crane Rental of Pennsylvania LLC | CW727 | Mine contractor | — |
| — | All Crane Rental of Tennessee | CL306 | Mine contractor | — |
| — | All Four Electric Co, Inc. | CP249 | Mine contractor | — |
| — | ALL INDUSTRIAL CONNECTIONS LLC | CC6178 | Mine contractor | — |
| — | All Phase Welding | CB581 | Mine contractor | — |
| — | All Pro Scrap | CA2738 | Mine contractor | — |
| — | All State Fire Equipment of Texas | CM672 | Mine contractor | — |
| — | All Tech Electric | CZ123 | Mine contractor | — |
| — | All Tech electric, Inc | CA9419 | Mine contractor | — |
| — | All-Safe Industrial | CP055 | Mine contractor | — |
| — | Allamakee County | CY545 | Mine contractor | — |
| — | Allan Myers, Inc. | CVXY | Mine contractor | — |
| — | Allen Pump Company | CTGM | Mine contractor | — |
| — | Allen Refractories Co | CX5B | Mine contractor | — |
| — | Allen Trucking LLC | CG316 | Mine contractor | — |
| — | Alliance Consulting Inc | CA921 | Mine contractor | — |
| — | Alliance Mill Consulting Inc. | CC0566 | Mine contractor | — |
| — | Alliance Source Testing | CY204 | Mine contractor | — |
| — | Alliant Mechanical Services | CB8087 | Mine contractor | — |
| — | Allied Electrical & Control Systems, Inc | CA9475 | Mine contractor | — |
| — | Allied Fire Protection Inc | CN043 | Mine contractor | — |
| — | Allied Technical Services, Inc. | CW730 | Mine contractor | — |
| — | Allied Universal Security Services | CA8664 | Mine contractor | — |
| — | Allison Inc | CHNH | Mine contractor | — |
| — | Alloy Crane & Machinery LLC | CB6164 | Mine contractor | — |
| — | Alloy Drilling, LLC | CC5283 | Mine contractor | — |
| — | Allsec Services Inc. | CB8961 | Mine contractor | — |
| — | Allsite Equipment Services LLC | CC8665 | Mine contractor | — |
| — | Allspray Ltd. | CB3274 | Mine contractor | — |
| — | ALLTEK MECHANICAL CONTRACTOR | CC0028 | Mine contractor | — |
| — | Ally Enterprises | CC5790 | Mine contractor | — |
| — | Alpha Drilling & Blasting, Inc. | CA3076 | Mine contractor | — |
| — | Alpha Dyno Nobel | CDPB | Mine contractor | — |
| — | Alpha Engineering Services Inc | CJYK | Mine contractor | — |
| — | Alpha Geoscience | CW414 | Mine contractor | — |
| — | Alpha Power | CC7895 | Mine contractor | — |
| — | Alpha Services LLC | CC3050 | Mine contractor | — |
| — | Alpine Consulting & Engineerin | C3QR | Mine contractor | — |
| — | Alpine Industrial Solutions Corp | CC6763 | Mine contractor | — |
| — | Alrock Inc. | CC2296 | Mine contractor | — |
| — | Alta Construction Inc | CX5M | Mine contractor | — |
| — | Alta Equipment Company | CB1031 | Mine contractor | — |
| — | Alternative Maintenance Solutions | CM493 | Mine contractor | — |
| — | Altorfer Inc | CBKW | Mine contractor | — |
| — | Altorfer Industries, Inc. | C5YM | Mine contractor | — |
| — | Am Cast, Inc. | CA6775 | Mine contractor | — |
| — | AM Equipment | CL161 | Mine contractor | — |
| — | AM Equipment | CC3135 | Mine contractor | — |
| — | AM Services | CK467 | Mine contractor | — |
| — | Amax Welding and Fabrication Inc. | CN546 | Mine contractor | — |
| — | Ambient Air Solutions, Inc | CB0909 | Mine contractor | — |
| — | Ambipar Response OSE, LLC | CA8778 | Mine contractor | — |
| — | Ambipar Response Texas, LLC. | CR941 | Mine contractor | — |
| — | AMC Mechanical, LLC. | CB4151 | Mine contractor | — |
| — | Amcrete Concrete Construction | CC7924 | Mine contractor | — |
| — | Amd Industries Inc | CYAJ | Mine contractor | — |
| — | AMERICAN COLLOID COMPANY | CC1813 | Mine contractor | — |
| — | American Contractors Academy | CB6650 | Mine contractor | — |
| — | American Crane Rental, Inc | CA6213 | Mine contractor | — |
| — | American Drilling Corp. LLC | CV720 | Mine contractor | — |
| — | American Drilling Of Ala Inc | CSF9 | Mine contractor | — |
| — | American Electric Equipment In | CSRW | Mine contractor | — |
| — | American Engineering Testing | CKSM | Mine contractor | — |
| — | American Environmental Septic Systems, Inc. | CW814 | Mine contractor | — |
| — | American Erection LLC | CC7399 | Mine contractor | — |
| — | American Fence Co Of Arizona | CXYQ | Mine contractor | — |
| — | American Forest Management, INC. | CB1889 | Mine contractor | — |
| — | American Green Corporation | CA5381 | Mine contractor | — |
| — | American Home Air-Conditioning & Heating | CT201 | Mine contractor | — |
| — | American Hydraulics Inc | CFMA | Mine contractor | — |
| — | American Incorporated | CD0166 | Mine contractor | — |
| — | American Mechanical Services | CX417 | Mine contractor | — |
| — | American Mining & Tunneling, LLC | CA4880 | Mine contractor | — |
| — | American Pfeiffer Corporation | CL075 | Mine contractor | — |
| — | American Power LLC | CA5802 | Mine contractor | — |
| — | American Pump and Drilling | CC6683 | Mine contractor | — |
| — | American Safety and Regulatory Services LLC | CC8544 | Mine contractor | — |
| — | American Scale Company Inc. | CY995 | Mine contractor | — |
| — | AMERICAN SERVICES LLC | CC0461 | Mine contractor | — |
| — | American splicing LLC | CC9993 | Mine contractor | — |
| — | AMERICAN STATE EQUIP. CO. | CF267 | Mine contractor | — |