Mountain Cement CO
Total reported releases 39k lb rose by an order of magnitude year over year (+4514%). Total releases concentrations have fallen 36% since 2010.
5 SAND CREEK RD, Laramie, Wyoming · 327310 · Nonmetallic Mineral Product · operated by Eagle Materials INC
Notable Signals
No notable signals at this facility for the current reporting year. See chemicals and equity context below for the full picture.
What This Facility Releases
Hydrogen cyanide
Hydrogen cyanide volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Manganese
Manganese volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Nickel And Nickel Compounds
Nickel And Nickel Compounds concentrations have more than doubled since 2015.
Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)
Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) concentrations have more than halved since 2010.
Zinc compounds
Zinc compounds volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Copper
Copper volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Mercury And Mercury Compounds
Mercury And Mercury Compounds concentrations have more than halved since 2010.
Lead And Lead Compounds
Lead And Lead Compounds concentrations have more than halved since 2010.
Who Lives Next To This Facility
Within 3 miles of this facility (6 Census block groups, population-weighted demographics): a population of 7,602. Why we surface this →
Low-income
People of color
Under age 5
Over age 64
Source: Census ACS 2018-2022 block-group demographics, population-weighted across the 3-mile buffer around this facility (from USEPA-clone/EJAM-open blockgroupstats). Indicator-level percentile and EJ-disparity scores are surfaced on the county page and the state page — they describe wider regional exposure burdens, not effects attributable to a single facility.
Source. EPA Toxics Release Inventory · retrieved 2026-05-07. Reporting year 2024. TRI is a federal public-domain dataset under 17 USC §105.
What this is not. TRI quantifies releases reported by the facility under EPCRA §313 — not ambient air or water concentrations measured at receptors. We do not attribute individual health outcomes to specific facilities; that exceeds what the data can support.