One stone.Every size.
From rip rap and landscape stone to the −10 blend and fine milled powders, all from the same Idaho deposit.
- 6″ × 12″
- 3″ × 5″
- 3″ minus
- 1″ × 2.5″
- 1″ minus
- ¼″ × 1″
- −1O blend
- −2OO mesh
- −3OO mesh
Crushed & screened · DarlingtonCaCO₃ · 97–99.9%
Crushed stone, classified material and milled grades. The name is the starting point; the sieve analysis is the specification.
Crushed stone
Scale for the site.
- 6″ × 12″Rip rapLarge stone for specified rock and erosion-control applications.
- 3″ × 5″Sugar rockCrushed limestone from the original USCal product range.
- 3″ minusRoad baseGraded material for the specified base application.
- 1″ × 2.5″Raw material & landscapeLandscape and raw-material sizing from the USCal range.
Classified material
Separation with a purpose.
- 1″ minusApplication-specific sizingReview the current sieve analysis with our team.
- ¼″ × 1″Application-specific sizingClassified calcium carbonate; confirm your intended use and size requirements.
- −1O × −4Granular materialRequest current particle-size distribution and grade specifications.
Milled & blended
Surface area, carefully controlled.
- −1O blendFine powder + sand-sized granulesOur signature blend combines fine and granular fractions in one material.
- −3OO meshFine milled gradeSelect fine material against the particle-size requirements of your process.
- −2OO meshFine milled gradeCurrent sieve and chemical analysis are available for grade evaluation.
Confirm the current sieve analysis, calcium content, moisture and handling before ordering. Custom sizes and blends can be discussed with our team.

Our −10 blend brings fine powder and sand-sized granules together for immediate reaction and continued release. Fine grades mill down to −200 and −300 mesh.
See what’s in the analysisLet’s put itto work.
Share your application, specifications and volume. We’ll help you select a grade, evaluate a sample and plan your supply.








