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From depositto delivery.

Five stages across two Idaho sites. Crushed, screened and milled. Never burned, nothing added.

Five stages take the stone from the bench at Darlington to the truck. Every one of them is mechanical: crushed, screened and milled. Nothing burned, nothing added.

A block of high-calcium limestone

Two Idaho sites. Darlington holds the deposit, the crushers and the screens. Gooding holds the mill. One operation, one source, every grade.

About US Calcium

ExtractionDarlington, Idaho

CrushingDarlington, Idaho

ClassificationDarlington, Idaho

MillingGooding, Idaho

DeliveryTo your operation

The stages

Material is selected from the deposit and tested for purity before it enters production.

The rock is reduced in stages. Its crystal structure stays intact because nothing is burned and nothing is added.

Screens separate landscape rock, agricultural grit and process fractions, each held to its grade.

6″ × 12″ · 3″ × 5″ · 3″ minus · 1″ × 2.5″ · 1″ minus · ¼″ × 1″

Finer material continues to Gooding, where it is milled into the blend and powder grades.

−10 blend · −200 mesh · −300 mesh

Bulk loading on your schedule. A load ticket and a certificate of analysis travel with every shipment.

One source. Two sites.
Every size.

Everything starts at Darlington. Crushed and screened grades ship from there. The finer fraction continues to Gooding, where it is milled into blend and powder grades.

Darlington, IdahoDeposit · crushing · screening

  1. 01ExtractionSelected from the deposit
  2. 02CrushingReduced in stages
  3. 03ClassificationScreened by size

Ships as

6″ × 12″3″ × 5″3″ minus1″ × 2.5″1″ minus¼″ × 1″

Gooding, IdahoMilling

  1. 04MillingBlend & powder grades

Ships as

−10 blend−200 mesh−300 mesh

05DeliveryBulk loading on your schedule. Load ticket and certificate of analysis with every shipment.

Mechanically processed. No burning. No added chemicals.

  1. 6″ × 12″
  2. 3″ × 5″
  3. 3″ minus
  4. 1″ × 2.5″
  5. 1″ minus
  6. ¼″ × 1″
  7. −1O blend
  8. −2OO mesh
  9. −3OO mesh
Grades

Crushed & screened · DarlingtonCaCO₃ · 97–99.9%

The deposit has been tested by independent labs since the early nineties. Every stage is checked, and every load leaves with a certificate of analysis.

97–99.9%
Calcium carbonate, typical analysis
<O.O1%
Heavy metals, typical analysis
2
Idaho sites, source to mill
199Os
Independent lab testing since the early

Let’s put itto work.

Share your application, specifications and volume. We’ll help you select a grade, evaluate a sample and plan your supply.

Loading screened limestone in the US Calcium yard

Contact

Call our team208-858-5250

Talk to our team

Tell us what you need. A person on our team will get back to you.

Prefer to talk? 208-858-5250

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