| OAOldcastle Apg New England | Holbrook | — | ◇ UNVERIFIED |
| OLOldcastle Lawn & Garden, INC. | Lee | — | ◇ UNVERIFIED |
| OSOmni Stone Works, INC. | Westborough | — | ◇ UNVERIFIED |
| OMOnyx Marble & Granite, INC. | Framingham | — | ◇ UNVERIFIED |
| PIPeopleready, INC. | Oxford | — | ◇ UNVERIFIED |
| PMPlymouth Marble and Granite, LLC | Plymouth | — | ◇ UNVERIFIED |
| PPPrecision Precast INC | Pittsfield | — | ◇ UNVERIFIED |
| PCPrestige Custom Mirror & Glass, INC. | Waltham | — | ◇ UNVERIFIED |
| PSProline Services Inc. | Oxford | — | ◇ UNVERIFIED |
| QBQuintal Burial Vaults, INC | Dighton | — | ◇ UNVERIFIED |
| RSRegal Stone Incorporated | Worcester | — | ◇ UNVERIFIED |
| RGRevolution Granite, LLC | Tewksbury | — | ◇ UNVERIFIED |
| RJR J Paquette | Holden | — | ◇ UNVERIFIED |
| RSRock Solid Fabrication, Inc. | Pembroke | — | ◇ UNVERIFIED |
| RCRosenfeld Concrete CORP | Framingham | — | ◇ UNVERIFIED |
| RRRowley Ready Mix, Inc. | Gloucester | — | ◇ UNVERIFIED |
| SUSaand US LLC | Webster | — | ◇ UNVERIFIED |
| SCSaint-gobain Ceramics & Plastics INC | Devens | — | ◇ UNVERIFIED |
| SGSaint Gobain Coating Solutions | Northampton | — | ◇ UNVERIFIED |
| SCS.barzola Construction CORP. | Braintree | — | ◇ UNVERIFIED |
| SCScituate Concrete Products | Marshfield | — | ◇ UNVERIFIED |
| SMSelect Marble & Granite | Everett | — | ◇ UNVERIFIED |
| SISquishy Industries LLC | Bolton | — | ◇ UNVERIFIED |
| SRState Road Cement Block | Dartmouth | — | ◇ UNVERIFIED |
| SMStonegate Marble & Granite INC | Sutton | — | ◇ UNVERIFIED |
| SPStone Pro's | Haverhill | — | ◇ UNVERIFIED |
| SSStone Solutions Granite | Mansfield | — | ◇ UNVERIFIED |
| SIStonetek Imports, INC. | New Bedford | — | ◇ UNVERIFIED |
| SIStoneyard, Inc. | Littleton | — | ◇ UNVERIFIED |
| TSThe Stoneworks Co., INC. | Holliston | — | ◇ UNVERIFIED |
| TLTop Line Granite Design Inc. | Tyngsboro | — | ◇ UNVERIFIED |
| USUnderground Supply, Inc. | Whately | — | ◇ UNVERIFIED |
| UOUsdol - Osha Springfield Area Office | Oxford | — | ◇ UNVERIFIED |
| VBVarney Bros Sand & Gravel | Medfield | — | ◇ UNVERIFIED |
| WMWorcester Marble & Granite INC. | Middleton | — | ◇ UNVERIFIED |
