Graymont Western U.S. Inc. Indian Creek — United States

Graymont Western U.S. Inc. Indian Creek is a lime plant in United States. Its listed capacity is 258,998 t of lime. Lime plants calcine limestone in kilns at 800–900°C; the quicklime they produce reacts with moisture and has to be kept dry. By capacity it ranks #31 among 75 lime plants in United States. It emits about 320,045 t CO₂e a year from Climate TRACE. That is 0.06% of the CO₂e from the 1,910 facilities in United States that have an emissions figure in IndustryAtlas. Its CO₂ per unit of capacity is 88% above the national median for this sector.

Facility data: Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0), id ct-38468171.

Measured and modelled emissions reconciliation

This facility is linked to GHGRP ID 1002773 for reporting year 2023. The official source reports 275,403 t CO2; Climate TRACE models 320,045 t CO2e.

Limits of this comparison

• Measured CO2 and modelled CO2e are not identical accounting constructs.
• The crosswalk is an entity match, not proof that reporting boundaries are identical.
• The reporting year is shown explicitly and values are not extrapolated to the current year.

Official GHGRP source · Download this reconciliation: CSV · JSON with provenance.

In context: how this facility compares

At 258,998 t of lime, Graymont Western U.S. Inc. Indian Creek is around the median lime plant in United States (208,805 t of lime). Subsector: lime. As lime plant, it requires high process heat (typically 600–900°C) for its core industrial operations, supplied by boilers, furnaces or direct combustion. Lime plants calcine limestone in kilns at 800–900°C; the quicklime they produce reacts with moisture and has to be kept dry.

Capacity & CO₂-intensity comparison computed from Climate TRACE industrial facilities data; sector role based on engineering reference.

What 320,045 t CO₂e a year looks like

This facility's estimated annual CO₂e (Climate TRACE, modelled) in everyday equivalents from the US EPA Greenhouse Gas Equivalencies calculator:

Equivalencies: US EPA Greenhouse Gas Equivalencies. Emissions: Climate TRACE.

Capacity vs largest lime plants in United States

Listed capacity (t of lime), Climate TRACE v6 (asset-level capacity & CO₂e, CC BY 4.0).

Parent company

Graymont Inc US EPA GHGRP
Parent company per US EPA GHGRP; the operator itself is not stated in the source dataset.

Local climate

Graymont Western U.S. Inc. Indian Creek sits in a cold semi-arid steppe climate zone (Köppen BSk), at 46.3°N in the northern hemisphere.

Köppen zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).

Site climate & environmental severity

This site sits in a benign, low-corrosion environment (estimated ISO 9223 class C1 — Very low), with dust abrasion the leading environmental stress.

In this site’s local climate, a bare 150 °C surface sheds about 1432 W/m² to ambient — roughly 1.10× the loss at a 20 °C reference. Reference-surface calculation at a 150 °C surface from WorldClim climate normals (ASTM C680 / ISO 12241) — an indicative per-climate comparison, not a measurement of this site’s specific equipment. Open method dataset: DOI 10.5281/zenodo.20787408 (CC BY 4.0).

Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.

How it compares & nearby sites

The #31 largest of 75 lime plants in United States by listed capacity (Climate TRACE).

Nearby industrial sites

• Montana City Cement Plant · Cement Plant · 168,520 t CO₂
• Trident Cement Plant · Cement Plant · 133,890 t CO₂
• Montana Valley Hams · Food & Beverage
• Chalet Market Inc. · Food & Beverage
• John'S Sandwich Shop Inc · Food & Beverage
• Riley'S Meats · Food & Beverage

Location

Coordinates 46.32847, -111.61741. View on OpenStreetMap.

Frequently asked questions