| HHHenry H. Ross and Son, INC. | Lititz | PA | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |
| HMHi-Grade Materials-Indio Ready Mix | Indio | CA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| HCHi-Way Concrete Products Co. Inc. | Wareham | MA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| HFHouston Facility | Houston | TX | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| HFHouston Facility | Houston | TX | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| HCHuffcutt Concrete, INC. | Chippewa Falls | WI | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| HBHughes Bros., INC. | Hampden | ME | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| IIImperial Industries Premix Marbletite Manufacturing | Winter Springs | FL | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| ILIndiana Limestone Company - Empire Mill | Oolitic | IN | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |
| ICIndustrial Ceramic Products, Inc. | Marysville | OH | Nonmetallic Mineral Product Manufacturing327110 | 20-99 | ◐ LIKELY ACTIVE |
| IRIngram Readymix, Inc.-sa2 #15 | San Antonio | TX | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| JMJackson, MS Wilbert Burial Vault Company | Jackson | MS | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| JGJohnson Granite, Inc.-MA | Mount Airy | NC | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |
| KCKahle Company | Ottawa | OH | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| KPKaty Plant | Katy | TX | Plastics and Rubber Products Manufacturing326150 | 20-99 | ◐ LIKELY ACTIVE |
| KGKing George Plant | King George | VA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| KRKing's Ready Mix | Cedar Rapids | IA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| KCKuhlman Corporation - Yard 1 | Toledo | OH | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LCLakes Concrete Plus | Bemidji | MN | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LCLALC Custom Building Products | Plant City | FL | Nonmetallic Mineral Product Manufacturing327332 | 20-99 | ◐ LIKELY ACTIVE |
| LPLASP Pavestone | Las Vegas | NV | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| LPLindsay Precast INC. | Franklinton | NC | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| LPLindsay Precast SC | Rock Hill | SC | Nonmetallic Mineral Product Manufacturing327332 | 20-99 | ◐ LIKELY ACTIVE |
| LSLithia Springs Plant 210 | Lithia Springs | GA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LOLive Oak Ready Mix, LLC | Ingleside | TX | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| LALombard Architectural Precast Products Company | Alsip | IL | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| MAMackenzie-Childs - Aurora | Aurora | NY | Nonmetallic Mineral Product Manufacturing327110 | 20-99 | ◐ LIKELY ACTIVE |
| MCMagnetic Component Engineering | Torrance | CA | Nonmetallic Mineral Product Manufacturing327113 | 20-99 | ◐ LIKELY ACTIVE |
| MSMajestic Stone Imports | Indianapolis | IN | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |
| MTMarble Today INC | Palatka | FL | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |
| MPMaryland Portable Concrete Elkton | Elkton | MD | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MMMaster Made Tanks, Inc. | Paris | AR | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MCMasters Concrete Products | Kingsley | PA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MMMemorial Monuments Meridian | Meridian | ID | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| MSMetaltec Steel Abrasive Company | Canton | MI | Nonmetallic Mineral Product Manufacturing327910 | 20-99 | ◐ LIKELY ACTIVE |
| MSMetaltec Steel Abrasive Company | Canton | MI | Nonmetallic Mineral Product Manufacturing327910 | 20-99 | ◐ LIKELY ACTIVE |
| MEMezger Enterprises | Kempner | TX | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |
| MEMezger Enterprises, LTD. | Kempner | TX | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |
| MMidland | Midland | TX | Chemical Manufacturing325998 | 20-99 | ◐ LIKELY ACTIVE |
| MCMidland Concrete Products Clear Lake | Clear Lake | IA | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| MSMid State Concrete Products LLC | Santa Maria | CA | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| MMMilpitas Materials Company | Milpitas | CA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MMMini Mix INC | Clinton Twp | MI | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MVMoreno Valley Plant 2 | Moreno Valley | CA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MCMorgan Concrete Company - Athens Plant | Athens | GA | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MCMoritz Concrete | Effingham | IL | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MMMorningstar Marble & Granite, Inc. | Topsham | ME | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |
| MOMosaics of America, INC. | Fort Pierce | FL | Nonmetallic Mineral Product Manufacturing327110 | 20-99 | ◐ LIKELY ACTIVE |
| MEMountain Empire Stoneworks LLC | Blountville | TN | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |
| MEMultistone Enterprises, Inc. | Savannah | GA | Nonmetallic Mineral Product Manufacturing327991 | 20-99 | ◐ LIKELY ACTIVE |