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

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.