| HBHemp Biocorp LLC | Bettendorf | IA | Machinery Manufacturing333999 | — | ◇ UNVERIFIED |
| HCHerschel CORP | Indianola | IA | Fabricated Metal Product Manufacturing332000 | — | ◇ UNVERIFIED |
| HMHolland Moving and Rigging Supplies | Forest City | IA | Machinery Manufacturing333924 | — | ◇ UNVERIFIED |
| ISIndustrial Services Corporation | Burlington | IA | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| ITIndustrial Tooling & Fabrication - Former Site of | Fort Madison | IA | Machinery Manufacturing333999 | — | ◇ UNVERIFIED |
| I6Industry 63, LLC | Waterloo | IA | Machinery Manufacturing333511 | — | ◇ UNVERIFIED |
| JCJefferson, City of | Jefferson | IA | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| JJJ & J Metal Spinning | New Hartford | IA | Machinery Manufacturing333513 | — | ◇ UNVERIFIED |
| JDJohn Deere Dubuque Works Proving Grounds | Dubuque | IA | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| JDJohn Deere Foundry | Waterloo | IA | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| JDJohn Deere Waterloo Operations | Waterloo | IA | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| KWKCB Welding & Manufacturing, LLC | Iowa Falls | IA | Machinery Manufacturing333992 | — | ◇ UNVERIFIED |
| KGKirchners Garage | Donnellson | IA | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| MMMeridian Manufacturing Group, INC. | Storm Lake | IA | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| MAMid America Trenchers LLC | Dexter | IA | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| MCMi-t-m Corporation | Peosta | IA | Machinery Manufacturing333999 | — | ◇ UNVERIFIED |
| OMOptical Mechanics, Inc. | Iowa City | IA | Machinery Manufacturing333314 | — | ◇ UNVERIFIED |
| PPPrecision Pulley & Idler - Corning (division #2) | Corning | IA | Machinery Manufacturing333922 | — | ◇ UNVERIFIED |
| RSRadius Steel Fabrication | Sioux City | IA | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| RMReliable Machine & Manufacturing CO INC | Hiawatha | IA | Machinery Manufacturing333515 | — | ◇ UNVERIFIED |
| SBSar Biomass Energy Systems | Pocahontas | IA | Machinery Manufacturing333414 | — | ◇ UNVERIFIED |
| SIScherrmans Implement | Dyersville | IA | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| SESiemens Energy, INC. | Fort Madison | IA | Machinery Manufacturing333611 | — | ◇ UNVERIFIED |
| SESiemens Energy, INC. | Otho | IA | Machinery Manufacturing333611 | — | ◇ UNVERIFIED |
| SGSiemens Gamesa Renewable Energy INC | Fort Madison | IA | Machinery Manufacturing333611 | — | ◇ UNVERIFIED |
| SGSiemens Gamesa Renewable Energy, INC. | Massena | IA | Machinery Manufacturing333249 | — | ◇ UNVERIFIED |
| SMSukup Manufacturing CO Clear Lake | Clear Lake | IA | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| SMSukup Manufacturing CO - Manly | Manly | IA | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| TMTobroco Machinery LLC | City of Des Moines | IA | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| TDTonka Division of Shannon Group | Mason City | IA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| VKVan Ko Chopping LLC | Reasnor (historical) | IA | Machinery Manufacturing333112 | — | ◇ UNVERIFIED |
| VCVarsity Cleaners | Waterloo | IA | Machinery Manufacturing333312 | — | ◇ UNVERIFIED |
| VSVer Steegh Manufacturing LLC | Oskaloosa | IA | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| WIWindridge Implements L.l.c. | Decorah | IA | Machinery Manufacturing333924 | — | ◇ UNVERIFIED |
