| BSBanas Sand & Gravel | Ludlow, MA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBayer CORP Plastics Tech | Springfield, MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| BIBerkshire Industries | Westfield, MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| BBBernardinos Bakery INC | Chicopee, MA | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| BTB&e Tool Company INC | Westfield, MA | Transportation Equipment Manufacturing336412 | — | ◇ UNVERIFIED |
| BFBurt's Furniture | E Longmeadow, MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CDCascades Diamond | Palmer, MA | Paper Manufacturing322291 | — | ◇ UNVERIFIED |
| CCChicopee Concrete Services INC Chicopee | Chicopee, MA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| CCChurchill Coatings | Palmer, MA | Wood Product Manufacturing321912 | — | ◇ UNVERIFIED |
| CCColeman Cable INC | East Longmeadow, MA | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| CVConn Valley Block CO | W Springfield, MA | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CSConstruction Service | Springfield, MA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CCCrane Company | Springfield, MA | Machinery Manufacturing333999 | — | ◇ UNVERIFIED |
| CCCreative Chemicals INC | Holyoke, MA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| CWCubit Wire & Cable | Holyoke, MA | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| CBCurtis Business Forms INC | Holyoke, MA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| CMCustom Marble Design INC | Agawam, MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CRCustom Railing Technology INC | Westfield, MA | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| CICytec Industries | Springfield, MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| DTDanaher Tool Group | Springfield, MA | Fabricated Metal Product Manufacturing332212 | — | ◇ UNVERIFIED |
| DCDarcy CO | Holyoke, MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| DPDecorated Products CO | Westfield, MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| DCDff CORP | Agawam, MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| DDDicronite Dry Lube Northeast | Westfield, MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| DPDielectric Polymers-adhesive Applications | Holyoke, MA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| DEDigital Equipment | Westfield, MA | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| DCDisston CO. | Chicopee, MA | Fabricated Metal Product Manufacturing332216 | — | ◇ UNVERIFIED |
| DADouble a Molding INC | Monson, MA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| DPDrt Power Systems - Agawam Facility | Agawam, MA | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| DMDurham Manufacturing CO | Springfield, MA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| ECEastern Cast Hardware CO INC | West Springfield, MA | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| EEEastern Etching & Manufacturing | Chicopee, MA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| EGEaton Global Hose | Ludlow, MA | Plastics and Rubber Products Manufacturing326220 | — | ◇ UNVERIFIED |
| EFEh Friedrich CO | Holyoke, MA | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| ECEssential Coatings & Millwork LLC | Springfield, MA | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| FSFacemate Site | Chicopee, MA | Textile Mills313310 | — | ◇ UNVERIFIED |
| FDFibermark Dsi INC | W Springfield, MA | Textile Product Mills314992 | — | ◇ UNVERIFIED |
| FBFirestone Building Prods | Springfield, MA | Plastics and Rubber Products Manufacturing326100 | — | ◇ UNVERIFIED |
 Fleming Industries | Chicopee, MA | Textile Product Mills314910 | — | ◇ UNVERIFIED |
| HPHadley Printing CO | Holyoke, MA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| HPHampden Papers INC | Holyoke, MA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| HDHano Document Printers INC | Springfield, MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| HPHazen Paper CO | Holyoke, MA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| HCHba Cast Products Company | Springfield, MA | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| HMHeidelberg Materials US Cement LLC | Palmer, MA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| HCHolyoke Card Company | Springfield, MA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| IAImi Adaptas | Palmer, MA | Computer and Electronic Product Manufacturing334516 | — | ◇ UNVERIFIED |
| ICIndustrial Chromium | Holyoke, MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| IEIndustrial Etching INC | E Longmeadow, MA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| IPInternational Paper | Russell (woronoco), MA | Paper Manufacturing322110 | — | ◇ UNVERIFIED |
