Nonmetallic Mineral Product Manufacturing in Maryland

NAICS 327 · MD

The register lists 196 facilities in Maryland. The Bureau of Labor Statistics counted 186 establishments in Maryland in 2025. Schuster Ready Mix, LLC, located in Owings Mills, employed 427 people in 2025.

SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE

Plants in Maryland126 FACILITIES

Listing 126 of 196: the facilities with a website, a size band or two sources on record. The rest are in site search.

Facility	City	Employees	Status
Cathedral Stone Products, INC	Hanover	1–19	● ACTIVE
Chesapeake Specialty Products, INC.	Sparrows Point	1–19	● ACTIVE
Maryland Portable Concrete, INC.	Havre De Grace	20–99	● ACTIVE
Washington Wilbert Vault Works, INC.	Laurel	20–99	● ACTIVE
Dc Scientific, INC.	Glen Burnie	1–19	● ACTIVE
Reagg LLC	Temple Hills	20–99	● ACTIVE
TITrans-tech, INC.	Adamstown	100–499	● ACTIVE
Arkadia, LLC	Annapolis	—	● ACTIVE
Carma Enterprises Limited Liability Company	Lexington Park	—	● ACTIVE
HNHilgartner Natural Stone Co., INC.	Baltimore	—	● ACTIVE
Jj Innovative Materials, INC.	Baltimore	—	● ACTIVE
MCMaryland China Company INC.	Reisterstown	—	● ACTIVE
Nelson Precast Products, LLC	Baltimore	—	● ACTIVE
Richards-wilbert INC	Hagerstown	—	● ACTIVE
The Maryland Ceramics and Steatite Company, INC.	Street	—	● ACTIVE
Tr Granite & Stone Studio LLC	Bethesda	—	● ACTIVE
Walpanel INC.	Bowie	—	● ACTIVE
ACAtlantic Concrete MD, LLC	Cockeysville	20–99	◐ LIKELY ACTIVE
TATate Access Floors	Jessup	100–499	▲ REPORTED CLOSED
HBHagerstown Block CO	Hagerstown	20–99	◐ LIKELY ACTIVE
SCSchuster Concrete Ready Mix Llc-hobbs Rd	Denton	20–99	◐ LIKELY ACTIVE
DGDaniel G. Schuster, LLC - Portable Plant #5	Baltimore	—	◐ LIKELY ACTIVE
MPMaryland Portable Concrete-riverside	Aberdeen	20–99	◐ LIKELY ACTIVE
NNNew Ngc, INC. Dba National Gypsum Company	Highlandtown	—	◐ LIKELY ACTIVE
PCPowercon Corporation	Severn	100–499	◐ LIKELY ACTIVE
QCQuikrete Company	Perryville	20–99	◐ LIKELY ACTIVE
SSScientific Specialties Service INC	Hanover	20–99	◐ LIKELY ACTIVE
TUThe United States Gypsum Company - Baltimore Plant	Baltimore	—	◐ LIKELY ACTIVE
AHAmrize Hagerstown Cement Plant (formerly Holcim Ha	Hagerstown	—	◐ LIKELY ACTIVE
CQCapital Quickrete	Clinton	—	◐ LIKELY ACTIVE
CPConcrete Pipe & Products	Jessup	—	◐ LIKELY ACTIVE
DGDaniel G. Schuster, INC. - Frederick Plant	Frederick	—	◐ LIKELY ACTIVE
HMHeidelberg Materials US Cement LLC	Union Bridge	—	◐ LIKELY ACTIVE
LBLafarge Building Material INC	Sparrows Point	—	◐ LIKELY ACTIVE
MCMerit Concrete	Laurel	—	◐ LIKELY ACTIVE
RBRedland Brick	Rocky Ridge	—	◐ LIKELY ACTIVE
SCSchuster Concrete Ready Mix, LLC	Owings Mills	—	◐ LIKELY ACTIVE
SCS&g Concrete Brooklyn Plant	Baltimore	—	◐ LIKELY ACTIVE
SCS&g Concrete Company	Odenton	—	◐ LIKELY ACTIVE
SGS & G Concrete Company, Llc- Grantley Ave. Plant	Baltimore	—	◇ UNVERIFIED
CPContractors Precast CORP.	Davidsonville	20–99	◐ LIKELY ACTIVE
OPOldcastle Precast INC.	Edgewood	—	◐ LIKELY ACTIVE
FMFrostburg Memorials	Frostburg	1–19	◇ UNVERIFIED
LMLaney Materials LLC - Laney Recycling and Aggregates	Laurel	20–99	◇ UNVERIFIED
LILocke Insulators INC	Baltimore	—	◇ UNVERIFIED
MEMaier, Ernst, INC.	Bladensburg	20–99	◇ UNVERIFIED
BRBack River Wastewater Treatment Facility	Baltimore	—	◐ LIKELY ACTIVE
BPBWIP Pavestone	Hagerstown	20–99	◐ LIKELY ACTIVE
DMD.c. Materials	Hyattsville	—	◐ LIKELY ACTIVE
DMDimensional Marble & Tile, INC.	Rockville	20–99	◐ LIKELY ACTIVE

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