Lyons Cement Plant Cemex Inc
Active
Facility
Stone
Operator: CEMEX Construction Materials South, LLC
Controller: Cemex S A
Location: Lyons, Boulder County, CO
Employees: 89
1,107
Violations
188
S&S Violations
196
Accidents
$1.3M
Penalties
Recent Violations
View all 1,107 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 11/17/2025 | 56.14112(b) | S&S | ModNegligence | $1,818 |
| 11/17/2025 | 56.14107(a) | Non-S&S | ModNegligence | $366 |
| 11/17/2025 | 56.14205 | Non-S&S | ModNegligence | $245 |
| 11/13/2025 | 56.4602 | Non-S&S | ModNegligence | $245 |
| 11/12/2025 | 56.4402 | Non-S&S | ModNegligence | $288 |
| 11/12/2025 | 56.4101 | Non-S&S | ModNegligence | $288 |
| 11/12/2025 | 56.12018 | Non-S&S | ModNegligence | $288 |
| 11/12/2025 | 56.20011 | Non-S&S | ModNegligence | $151 |
| 11/12/2025 | 56.4200(a)(1) | Non-S&S | ModNegligence | $151 |
| 11/12/2025 | 56.4200(a)(2) | Non-S&S | ModNegligence | $151 |
| 11/12/2025 | 56.4200(b)(2) | Non-S&S | ModNegligence | $288 |
| 11/12/2025 | 56.14112(b) | Non-S&S | ModNegligence | $432 |
| 11/12/2025 | 56.20003(a) | Non-S&S | ModNegligence | $1,126 |
| 07/16/2025 | 62.130 | S&S | ModNegligence | $959 |
| 07/16/2025 | 62.130 | S&S | ModNegligence | $959 |
| 07/16/2025 | 62.130 | S&S | ModNegligence | $432 |
| 07/16/2025 | 56.5001(a)/56.5005 | Non-S&S | ModNegligence | $313 |
| 07/15/2025 | 56.16003 | Non-S&S | ModNegligence | $245 |
| 07/15/2025 | 56.20003(a) | Non-S&S | ModNegligence | $697 |
| 07/15/2025 | 56.14132(a) | S&S | ModNegligence | $4,047 |
Accidents & Injuries
View all 196 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 11/20/2025 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 11/08/2025 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 10/03/2025 | FIRE | ACCIDENT ONLY | None |
| 07/01/2025 | SLIP OR FALL OF PERSON | DYS AWY FRM WRK & RESTRCTD ACT | 20d lost, 192d restricted |
| 06/24/2025 | ENTRAPMENT | ACCIDENT ONLY | None |
| 05/16/2025 | HOISTING | ACCIDENT ONLY | None |
| 02/13/2025 | IGNITION OR EXPLOSION OF GAS OR DUST | DYS AWY FRM WRK & RESTRCTD ACT | 5d lost, 32d restricted |
| 09/27/2023 | ENTRAPMENT | ACCIDENT ONLY | None |
| 03/12/2023 | ENTRAPMENT | ACCIDENT ONLY | None |
| 12/22/2022 | ENTRAPMENT | ACCIDENT ONLY | None |
Inspections
View all 116 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 11/10/2025 | 11/20/2025 | 68.75 | 3 |
| 10/06/2025 | 10/06/2025 | 6.25 | 1 |
| 09/23/2025 | 09/25/2025 | 31.75 | 1 |
| 08/04/2025 | 08/05/2025 | 3.50 | 1 |
| 07/08/2025 | 07/21/2025 | 138.00 | 3 |
| 03/03/2025 | 03/03/2025 | 2.50 | 1 |
| 02/13/2025 | 03/07/2025 | 63.25 | 1 |
| 01/06/2025 | 01/13/2025 | 84.50 | 3 |
| 06/11/2024 | 06/11/2024 | 1.75 | 1 |
| 05/22/2024 | 05/22/2024 | 4.75 | 1 |
Mine Details
MSHA Mine ID0500344
Mine TypeFacility
StatusActive
CommodityStone
SIC DescriptionCement
Employees89
Days/Week7.0
Hours/Shift12.0
Coordinates40.2116670, -105.2361110
Nearest TownLyons
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Frequently Asked Questions
How many MSHA violations does Lyons Cement Plant Cemex Inc have?
Lyons Cement Plant Cemex Inc has 1107 MSHA violations on record, of which 188 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $1.3M.
What type of mine is Lyons Cement Plant Cemex Inc?
Lyons Cement Plant Cemex Inc is a Facility mine producing Stone, located in Lyons, Boulder County, CO. It currently has 89 employees.
Has anyone been injured or killed at Lyons Cement Plant Cemex Inc?
According to MSHA records, Lyons Cement Plant Cemex Inc has 196 reported accident/injury records and 0 fatalities on file.
Who operates Lyons Cement Plant Cemex Inc?
Lyons Cement Plant Cemex Inc is operated by CEMEX Construction Materials South, LLC and controlled by Cemex S A. MSHA Mine ID: 0500344.