Manufacturing of treated clays, artificially activated with acid or other materials
404 FACILITIES| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Heidelberg Materials Ne Llc/rich Hill Quarry | Connellsville | PA | — | UNVERIFIED |
| Heidelberg Materials Ne Llc/rich Hill Quarry | Connellsville | PA | — | UNVERIFIED |
| Heritage Slag Products, LLC (gary) | Gary | IN | — | UNVERIFIED |
| Holcim Incorporated | Birmingham | AL | — | UNVERIFIED |
| Holcim (us) INC | Weirton | WV | — | UNVERIFIED |
| Icmi/nukote Dunbar Plt | Connellsville | PA | — | UNVERIFIED |
| Idaho Minerals, L.l.c. | Malad City | ID | — | UNVERIFIED |
| Imerys Greeneville, INC. | Greeneville | TN | — | UNVERIFIED |
| Imerys Oilfield Solutions | Wrens | GA | — | UNVERIFIED |
| Imerys Perlite USA | Escondido | CA | — | UNVERIFIED |
| Imerys Perlite Usa, INC | Quincy | FL | — | UNVERIFIED |
| Imerys Perlite Usa, INC. | Klamath Falls | OR | — | UNVERIFIED |
| Imerys Perlite Usa, INC. | Lake Wales | FL | — | UNVERIFIED |
| Imerys Sandersville Calcine Plant | Sandersville | GA | — | UNVERIFIED |
| Industrial Minerals | Kings Creek | SC | — | UNVERIFIED |
| Integrated Materials INC | San Jose | CA | — | UNVERIFIED |
| Isolatek International INC | San Bernardino | CA | — | UNVERIFIED |
| Ivory Mine Project | Lovelock | NV | — | UNVERIFIED |
| J Cloud INC | El Cajon | CA | — | UNVERIFIED |
| Jm Huber Corporation | Atlanta | GA | — | UNVERIFIED |
| Kansas Minerals | Mankato | KS | — | UNVERIFIED |
| Kapaa Quarry Recycling INC | Kailua | HI | — | UNVERIFIED |
| Keystone Filler & Mfg/muncy Coal Prep Pl | Muncy | PA | — | UNVERIFIED |
| Kincheloe and Sons | Myrtle Point | OR | — | UNVERIFIED |
| Kutztown Quarry | Kutztown | PA | — | UNVERIFIED |
FactoryRegistry lists 404 facilities whose primary industry classification is one of the 1 industry above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced treated clays, artificially activated with acid or other materials, in the shares shown above, and does not say which establishments. Where a plant’s own website or a federal registry names what that plant makes, it appears on the plant’s own page with the source named.
The U.S. Census Bureau recorded this product line in 1 US manufacturing industry in the 2022 Economic Census, as the most specific line that industry reported, and withheld the establishment count for it.
These are counts of establishments by industry: the Economic Census publishes them as industry totals and never as a list of plants.
NAPCS collection code 2025175000. Source for the product line, the establishment counts and the shares: U.S. Census Bureau, 2022 Economic Census (ECNNAPCSIND2022). Federal source data is public domain. Facility records are compiled separately by FactoryRegistry and carry their own sources.