It’s Time to Stop Stacking PG -
and Start Using It!
The innovative potential for PG use presents a new opportunity for sustainable economic growth. When mixed with existing road base materials, PG can be used to build essential infrastructure like roads and bridges. It’s a win-win for the environment and economy, too. Infrastructure built with existing stockpiles of PG creates a readily available new material source to support infrastructure maintenance
By The Numbers:
1.7
Billion
Tons of PG stacked in the U.S.
28
Million
New tons produced each year
5
tons
Of PG made per ton of phosphate product produced
20+ Countries
Already Use PG
Globally, over 20 countries have acknowledged the innovative potential of PG. If they can do it, so should the United States.
Embracing PG innovation guarantees an essential domestic industry’s future and continued employment for thousands of Americans for years to come.
It is time to view stacking PG as a last resort rather than a first option and finally put it to sustainable use.
Federal PG Use Approval History
In 2024, EPA approved construction of a PG pilot road project near Mulberry, Florida. The approximately 3,200 ft. stretch of road will blend PG with traditional road base materials and is a major step forward in exploring safe, productive uses for phosphate byproducts. Results will inform broader approval for PG use in future public infrastructure.
Florida Should:
Prepare:
for future EPA approval.
Direct:
the Florida Department of Transportation to test the suitability of PG For use as road base.
Rare Earth Elements — From Stacks to Supply Chains
What if the materials we’ve stored for decades could help rebuild the future? Florida’s phosphogypsum gypstacks contain both light and heavy rare earth elements—minerals essential to technologies like electric vehicles, clean energy, and defense systems. Early research suggests these stacks hold enough material to supply North American demand for many years, turning what was once a byproduct into a new product that supports innovation.