Premier Magnesia LLC
Doing business as Pmc of America
At a glance
Employees100-499
In business sinceNot reported
HeadquartersWaynesville, NC
US patents14
SAM.gov UEIEGEKMFMMJTP5
CAGE code4LKM1
Incorporated inDE
- magnesium oxide
- magnesium sulfate
- brands
- soil fertility
- animal nutrition
Named on the company’s own website, read JUL 29, 2026
CareersCareers page — seen SEP 8, 2026
Supplier designations
For Profit Organization
Self-certified by the company in its SAM.gov registration
Patents
14 US patents granted 2013–2025, 3 of them in the five years to SEP 2025.
Environmental technology 8Materials, metallurgy 5Chemical engineering 1
- Biosolids quality and dewaterabilityUS 12,410,086 · granted SEP 9, 2025
- Geopolymer cementUS 12,012,361 · granted JUN 18, 2024
- Biosolids quality and dewaterabilityUS 11,964,889 · granted APR 23, 2024
- Compositions and methods for treating wastewaterUS 10,287,198 · granted MAY 14, 2019
- Compositions and methods for treating wastewaterUS 10,280,100 · granted MAY 7, 2019
Newest 5 shown · Granted to Premier Magnesia, LLC · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plants
7 FACILITIES| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Premier Magnesia - Greendale Bulk Plant | Greendale | IN | 20–99 | LIKELY ACTIVE |
| Premier Magnesia - Hazelwood Bulk Plant | Waynesville | NC | 20–99 | LIKELY ACTIVE |
| Premier Magnesia LLC - Waynesville Bulk Plant | Waynesville | NC | 20–99 | LIKELY ACTIVE |
| Premier Magnesia - Repack | Waynesville | NC | 100–499 | LIKELY ACTIVE |
| Premier Magnesia LLC | Waynesville | NC | 20–99 | ACTIVE |
| Premier Magnesia - Supply Chain | Waynesville | NC | 20–99 | LIKELY ACTIVE |
| Premier Magnesia - Aspers | Aspers | PA | 1–19 | LIKELY ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.