| JRJd's Roofing and Sheet Metal Work* | Kaplan | — | ◇ UNVERIFIED |
| JMJerry's Machine & Fabrication INC. | Lake Charles | — | ◇ UNVERIFIED |
| JMJ.i.g. Machine Works, INC. | New Iberia | — | ◇ UNVERIFIED |
| JCJohnson Construction and Fabrication, INC. | Jefferson | — | ◇ UNVERIFIED |
| KAK and B Manufacturing, LLC | Houma | — | ◇ UNVERIFIED |
| KSKaplan Sheet Metal | Kaplan | — | ◇ UNVERIFIED |
 K & B Machine Works, LLC | Houma | — | ◇ UNVERIFIED |
| KWKB Waterjet Cutting LLC | Addis | — | ◇ UNVERIFIED |
| KMKeating Manufacaturing & Fabrication, INC | Covington | — | ◇ UNVERIFIED |
| LALake Area Equipment Maintenance, INC. | Lake Charles | — | ◇ UNVERIFIED |
| LCLane Custom Metal, INC. | Lafayette | — | ◇ UNVERIFIED |
| LVLa Valve Source INC | Milton | — | ◇ UNVERIFIED |
| LTLeaning Technical Services, LLC | Belle Chasse | — | ◇ UNVERIFIED |
| LFLg Fabricators | Lockport | — | ◇ UNVERIFIED |
 Liberty Welding & Iron Works CO. | Metairie | — | ◇ UNVERIFIED |
 Lifting Technologies INC | Monroe | — | ◇ UNVERIFIED |
| LJLittle Joe's Welding and Sons, INC. | Bossier City | — | ◇ UNVERIFIED |
| LBLouisiana Burner | Pineville | — | ◇ UNVERIFIED |
| LBLudwig Buildings Enterprises, LLC | Harahan | — | ◇ UNVERIFIED |
| MMMainline Machine, INC. | Lafayette | — | ◇ UNVERIFIED |
| MSMangels Sheet Metal, INC | Alexandria | — | ◇ UNVERIFIED |
| MFMarine Fab & Repair, INC | Houma | — | ◇ UNVERIFIED |
| MLMascoat LLC | West Monroe | — | ◇ UNVERIFIED |
| MMMason Machine and Fab, LLC | Lafayette | — | ◇ UNVERIFIED |
| MGMbi Global, LLC | Lafayette | — | ◇ UNVERIFIED |
| MIMccampbell INC | Destrehan | — | ◇ UNVERIFIED |
| MMMcdonough Marine Service | Metairie | — | ◇ UNVERIFIED |
| MMMcelroy Metal Mill INC | Monroe | — | ◇ UNVERIFIED |
| MMMcelroy Metal Mill, INC. | Alexandria | — | ◇ UNVERIFIED |
| MMMckinzey Metal Works, INC. | Lake Charles | — | ◇ UNVERIFIED |
| MSMct Sheetmetal, INC. | Lafayette | — | ◇ UNVERIFIED |
| MWMetal Works Corporation | Baton Rouge | — | ◇ UNVERIFIED |
| MBMetro Boiler Tube Company, INC. | Gonzales | — | ◇ UNVERIFIED |
| MFMidland Fabricators & Process Systems LLC | Metairie | — | ◇ UNVERIFIED |
| MSMilton Severio | Denham Springs | — | ◇ UNVERIFIED |
| MCMirarca Custom Metal Design, LLC | Denham Springs | — | ◇ UNVERIFIED |
| MTMontgomery Tank of Louisiana INC | Montgomery | — | ◇ UNVERIFIED |
| MRM Rodrigue & Son INC - Vacherie Plant | Vacherie | — | ◇ UNVERIFIED |
| MIMueller, INC. | Port Allen | — | ◇ UNVERIFIED |
| NONational Oilwell Varco INC | Amelia | — | ◇ UNVERIFIED |
| NONational Oilwell Varco LP - Rs Venture Houma | Houma | — | ◇ UNVERIFIED |
| NFNavarre Fabrication, INC. | Lafayette | — | ◇ UNVERIFIED |
| NDNew Deal Metal Buildings, LLC | Denham Springs | — | ◇ UNVERIFIED |
| NLNextcoat LLC | Baton Rouge | — | ◇ UNVERIFIED |
| NINorris International Services, LLC. | New Iberia | — | ◇ UNVERIFIED |
| NPNorthlake Precision, INC. | Mandeville | — | ◇ UNVERIFIED |
| NHNorthshore Hydraulics, LLC | Tickfaw | — | ◇ UNVERIFIED |
| NTNov Tuboscope Houma Coating | Schriever | — | ◇ UNVERIFIED |
| NRNufab Rebar-slidell, LLC | Alexandria | — | ◇ UNVERIFIED |
| OLOhmstede LTD - Ohmstede LTD St Gabriel Plant | Saint Gabriel | — | ◇ UNVERIFIED |
