| PMPetersen Machine, LLC | Brandon | SD | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SIScherer Inc. | Sioux Falls | SD | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
Sd Industries | Alexandria | SD | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| SSSioux Steel Company | Lennox | SD | Fabricated Metal Product Manufacturing332311 | 20-99 | ◐ LIKELY ACTIVE |
| SSSioux Steel Livestock Division | Lennox | SD | Fabricated Metal Product Manufacturing332212 | — | ◐ LIKELY ACTIVE |
| SWSupreme Welding, INC. | Clear Lake | SD | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| IMInfinity Machine LLC | Rapid City | SD | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| MWMaguire Water | Sioux Falls | SD | Fabricated Metal Product Manufacturing332420 | — | ◐ LIKELY ACTIVE |
| AAA & a Engraving INC | Rapid City | SD | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| BSBae Systems Land Armaments L.p. | Aberdeen | SD | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| BSBae Systems Land & Armaments LP | Aberdeen | SD | Fabricated Metal Product Manufacturing332995 | — | ◇ UNVERIFIED |
| BPB&g Powder Coating LLC | Watertown | SD | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| CICaptech International, LLC (former Location) | Rapid City | SD | Fabricated Metal Product Manufacturing332992 | — | ◇ UNVERIFIED |
| CFCustom Fabricators INC. | Watertown | SD | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| DADakota Arms | Sturgis | SD | Fabricated Metal Product Manufacturing332992 | — | ◇ UNVERIFIED |
| DMDakota Mobile Hydraulics | Brookings | SD | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| MLMetrix, LLC | Watertown | SD | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| SCSolomon Corporation - Flandreau | Flandreau | SD | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| UAUltramax Ammunition | Rapid City | SD | Fabricated Metal Product Manufacturing332993 | — | ◇ UNVERIFIED |
| AFAmesburyTruth-Sioux Falls | Sioux Falls | SD | Fabricated Metal Product Manufacturing332321 | 100-499 | ◐ LIKELY ACTIVE |
| BHBlack Hills Overhead Doors LLC | Rapid City | SD | Fabricated Metal Product Manufacturing332321 | — | ◐ LIKELY ACTIVE |
| BWBroadway Welding - Watertown | Watertown | SD | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| BRBuffalo Ridge Metal Works, LLC | White | SD | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| CFCounterpart Fabrication | Brookings | SD | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| CSC & S Griese, L.l.c | Pierre | SD | Fabricated Metal Product Manufacturing332322 | — | ◐ LIKELY ACTIVE |
| DFDakota Fluid Power Aberdeen | Aberdeen | SD | Fabricated Metal Product Manufacturing332912 | 1-19 | ◐ LIKELY ACTIVE |
| DFDakota Fluid Power OEM | Sioux Falls | SD | Fabricated Metal Product Manufacturing332912 | 20-99 | ◐ LIKELY ACTIVE |
| DFDakota Fluid Power Rapid City | Rapid City | SD | Fabricated Metal Product Manufacturing332912 | 20-99 | ◐ LIKELY ACTIVE |
| DFDakota Fluid Power SF | Sioux Falls | SD | Fabricated Metal Product Manufacturing332912 | 20-99 | ◐ LIKELY ACTIVE |
| DMDakotaland Manufacturing | Sioux Falls | SD | Fabricated Metal Product Manufacturing332216 | 100-499 | ◐ LIKELY ACTIVE |
| DTDakota Tube- Airport Drive location | Watertown | SD | Fabricated Metal Product Manufacturing332996 | 100-499 | ◐ LIKELY ACTIVE |
| DTDakota Tube Inc. - Pheasant Ridge location | Watertown | SD | Fabricated Metal Product Manufacturing332996 | 1-19 | ◐ LIKELY ACTIVE |
| DZDay & Zimmermann Lone Star LLC | Yankton | SD | Fabricated Metal Product Manufacturing332992 | — | ◐ LIKELY ACTIVE |
| DDDohrman Design and Manufacturing LLC | Piedmont | SD | Fabricated Metal Product Manufacturing332323 | — | ◐ LIKELY ACTIVE |
| FFFields Fish & Game LLC | De Smet | SD | Fabricated Metal Product Manufacturing332992 | — | ▲ REPORTED CLOSED |
| HIHarvard Integrations | Tea | SD | Fabricated Metal Product Manufacturing332311 | 100-499 | ◐ LIKELY ACTIVE |
| HPHigh Plains Metalworks LLC | Sturgis | SD | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| HIHorner Industries INC. | Rapid City | SD | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| HWHuron Welding LLC | Huron | SD | Fabricated Metal Product Manufacturing332322 | — | ◐ LIKELY ACTIVE |
| JPJacobs Precision Welding, INC | Lead | SD | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| LMLarson Mfg. LLC | Brookings | SD | Fabricated Metal Product Manufacturing332321 | 100-499 | ◐ LIKELY ACTIVE |
| MTMaguire Tank | Sioux Falls | SD | Fabricated Metal Product Manufacturing332420 | 100-499 | ◐ LIKELY ACTIVE |
| MIMiTek Inc. Britton | Britton | SD | Fabricated Metal Product Manufacturing332119 | 20-99 | ◐ LIKELY ACTIVE |
Paraform Gates LLC | Rapid City | SD | Fabricated Metal Product Manufacturing332323 | — | ◐ LIKELY ACTIVE |
| PSPierre Steel Mfg. LLC | Pierre | SD | Fabricated Metal Product Manufacturing332322 | — | ◐ LIKELY ACTIVE |
| PFPivotal Fab and Powder | Watertown | SD | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| PMP & M Steel | Sioux Falls | SD | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| PFProtech Fabrication and Machine LLC | Lake Norden | SD | Fabricated Metal Product Manufacturing332323 | — | ◐ LIKELY ACTIVE |
| RPRapid Precision Mfg | Britton | SD | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
SD Industries Mitchell | Mitchell | SD | Fabricated Metal Product Manufacturing332313 | 1-19 | ◐ LIKELY ACTIVE |