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Nonmetallic Mineral Product Manufacturing

20,947 FACILITIESAll Census product lines →

NAICS 327

Map, cities and product lines
Map of United States manufacturing facilities

Product lines reported here

These are counts by industry: the Economic Census records what establishments in nonmetallic mineral product manufacturing reported producing, and never names a plant.

Plants in this industry20,947 FACILITIES

FacilityCityStateEmployeesStatus
Opco Laboratory, INCFitchburgMA— ACTIVE
Opta WalkertonWalkertonIN20–99 ACTIVE
Oran Safety Glass INCEmporiaVA— ACTIVE
Outback INCFresnoCA100–499 ACTIVE
Outdoor Creations, INC.AndersonCA20–99 ACTIVE
Ozinga On-site INCMokenaIL100–499 ACTIVE
Pacific Ceramics, INC.Santa ClaraCA— ACTIVE
Pacific Vial Mfg INCCommerceCA— ACTIVE
Palmetto Vermiculite, INC.WoodruffSC— ACTIVE
Pangborn LLCFairburnGA— ACTIVE
Pauli Systems, INC.FairfieldCA— ACTIVE
Penguin, LLCSturgisMI— ACTIVE
Peterson Concrete Tank Company, INC.North Little RockAR20–99 ACTIVE
Pickard INCAntiochIL— ACTIVE
P J R Industries, INCBuffaloNY— ACTIVE
Plymouth Grating Laboratory, INC.CarverMA— ACTIVE
Poly6 Technologies, INC.BurlingtonMA20–99 ACTIVE
Portobello America, INC.BaxterTN100–499 ACTIVE
Precision Electronic Glass, INC.VinelandNJ— ACTIVE
Pureon INCMonroeNC20–99 ACTIVE
Ransom & Randolph LLCMaumeeOH20–99 ACTIVE
Rayotek Scientific, LLCSan DiegoCA— ACTIVE
Reed Minerals, LLCSatsumaAL— ACTIVE
Reed Minerals, LLCGaryIN1–19 ACTIVE
Reed Minerals, LLCCamp HillPA20–99 ACTIVE
Remco Technology, INCSkokieIL— ACTIVE
Reynard CorporationSan ClementeCA— ACTIVE
Rock of Ages CorporationGranitevilleVT20–99 ACTIVE
Salmon Falls StonewareDoverNH20–99 ACTIVE
San Jose Delta Associates LLCSanta ClaraCA— ACTIVE
Schott Pharma Usa, INC.LebanonPA100–499 ACTIVE
Schwartz Redi-mix INCBoveyMN20–99 ACTIVE
Sierra Precision Optics INCAuburnCA— ACTIVE
Sigma Design, INC.CamasWA— ACTIVE
Simon Pearce (u.s.), LLCWindsorVT— ACTIVE
Smith-midland CorporationMidlandVA— ACTIVE
Smokey Mountain Tops, INC.KnoxvilleTN— ACTIVE
Solid Sealing Technology, INC.WatervlietNY— ACTIVE
Southern Concrete Materials-waynesville PlantWaynesvilleNC20–99 ACTIVE
Spec Formliners, INC.Santa AnaCA20–99 ACTIVE
Spectrum Scientific IncorporatedIrvineCA— ACTIVE
Sponge-jet, INC.NewingtonNH— ACTIVE
Standridge Granite CORPSanta Fe SpringsCA— ACTIVE
St Louis Prestress INCGlen CarbonIL— ACTIVE
Stone Link Marble & Granite CORPWorcesterMA— ACTIVE
Sublime Systems, INC.SomervilleMA100–499 ACTIVE
Superabrasives INCWixomMI— ACTIVE
Superior GraphiteHopkinsvilleKY20–99 ACTIVE
Superior Technical Ceramics CorporationSaint AlbansVT— ACTIVE
Sure-foot Industries CORPClevelandOH20–99 ACTIVE

Search all 20,947 facilities

Common questions

How many nonmetallic mineral product manufacturing facilities are in the United States?

As of AUG 2026, FactoryRegistry lists 20,947 nonmetallic mineral product manufacturing facilities (NAICS 327) across 56 states, compiled from EPA, OSHA and Census records.

Which state has the most nonmetallic mineral product manufacturing facilities?

California, with 2,776 facilities listed.

How many nonmetallic mineral product manufacturing facilities are still operating?

6,682 of the 20,947 listed carry a recent operating signal in federal data — the register's Active or Likely active status. The rest are listed from their filings alone, which is a gap in the federal record rather than evidence that a plant has closed.