| MCMaschmeyer Concrete Company - Apollo | Apollo Beach | — | ◇ UNVERIFIED |
| MCMaschmeyer Concrete Company of Florida | West Palm Beach | — | ◇ UNVERIFIED |
| MCMaschmeyer Concrete Company of Florida | Deltona | — | ◇ UNVERIFIED |
| MCMaschmeyer Concrete CO of Florida INC | Davenport | — | ◇ UNVERIFIED |
| MCMaschmeyer Concrete CO of Florida INC | Casselberry | — | ◇ UNVERIFIED |
| MCMaschmeyer Concrete CO of Florida INC | Debary | — | ◇ UNVERIFIED |
| MCMaschmeyer Concrete-deltona Concrete Batch Plant | Deltona | — | ◇ UNVERIFIED |
| MCMaschmeyer Concrete-st Cloud | Saint Cloud | — | ◇ UNVERIFIED |
| MCMaschmeyer Concrete Taft Facility | Orlando | — | ◇ UNVERIFIED |
| MCMaschmeyer Concrete - Winter Beach | Winter Beach | — | ◇ UNVERIFIED |
| MRMaschmeyer-lakeland Rm | Lakeland | — | ◇ UNVERIFIED |
| MRMaschmeyer-loughman Rm | Davenport | — | ◇ UNVERIFIED |
| MRMaschmeyer-melbourne Rm | Melbourne | — | ◇ UNVERIFIED |
| MRMaschmeyer-onsite-universal Rm | Orlando | — | ◇ UNVERIFIED |
| MRMaschmeyer-sligh Rm | Tampa | — | ◇ UNVERIFIED |
| MCMaschmeyer-st. Cloud Rm | Saint Cloud | — | ◇ UNVERIFIED |
| MMaschmeyer-vero(blk-rm) | Vero Beach | — | ◇ UNVERIFIED |
| MRMayo Ready Mix Concrete Sr 51 | Mayo | — | ◇ UNVERIFIED |
| MGMccash Glass LLC | Naples | — | ◇ UNVERIFIED |
| MMMdm Marble CO | Florida | — | ◇ UNVERIFIED |
 Meadow Burke, LLC. | Tampa | — | ◇ UNVERIFIED |
| MIMetric, INC. (jan Nylund) | Tampa | — | ◇ UNVERIFIED |
| MGMinami Granite Designs INC | Ocala | — | ◇ UNVERIFIED |
 Mmc Materials Gulf Coast - Crestview Plant | Crestview | — | ◇ UNVERIFIED |
| Mmc Materials Gulf Coast - Ft Walton Beach Plant | Fort Walton Beach | — | ◇ UNVERIFIED |
| Mmc Materials Gulf Coast - Pensacola Plant | Pensacola | — | ◇ UNVERIFIED |
| Mmc Materials Gulf Coast - Point Washington Plant | Point Washington | — | ◇ UNVERIFIED |
| Mmc Materials Gulf Coast - Port St. Joe Plant | Port Saint Joe | — | ◇ UNVERIFIED |
| MCMonroe Concrete Batch Plant-big Pine Key | Big Pine Key | — | ◇ UNVERIFIED |
| MCMonroe Concrete Products, INC. (toppino Cbp) | Key West | — | ◇ UNVERIFIED |
| NSNatural Stone Concepts of Naples INC | Naples | — | ◇ UNVERIFIED |
| NNNew Ngc, INC. | Tampa | — | ◇ UNVERIFIED |
| NNNew Ngc INC D/b/a Nat'l Gypsum CO | Orlando | — | ◇ UNVERIFIED |
| OCObt Concrete Batch Plant | Orlando | — | ◇ UNVERIFIED |
| OFOdessa Facility | Odessa | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Bartow | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC | Medley | — | ◇ UNVERIFIED |
| OPOldcastle Precast INC. | Jacksonville | — | ◇ UNVERIFIED |
| OPOldcastle Precast, INC. - Jacksonvillesp | Jacksonville | — | ◇ UNVERIFIED |
| OPOldcastle Precast, INC. - Tallahasseesp | Midway | — | ◇ UNVERIFIED |
| OROldcastle Retail, INC. | Jacksonville | — | ◇ UNVERIFIED |
| OMOzinga - Miami Plant | Miami | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Davie | Fort Lauderdale | — | ◇ UNVERIFIED |
| OROzinga Ready-mix-deerfield Beach | Pompano Beach | — | ◇ UNVERIFIED |
| OROzinga Ready Mix-golden Glades | Miami | — | ◇ UNVERIFIED |
| OROzinga Ready-mix Miami 17th St | Miami | — | ◇ UNVERIFIED |
| OSOzinga South Florida, Inc., Proposed Miami Gardens Cbp | Miami | — | ◇ UNVERIFIED |
| OSOzinga South Florida INC. - Riviera Beach Plant 440 | Riviera Beach | — | ◇ UNVERIFIED |
| PCPanama City Stone LLC | Panama City Beach | — | ◇ UNVERIFIED |
| POPece of Mind Environmental - Concrete Crusher Yard | Orlando | — | ◇ UNVERIFIED |
