Mining Incidents

Lhoist North America of Arizona Inc. operator

Controlled by Lhoist Group
MSHA operator ID: L13416
Fatalities
2
Total incidents
632
Mines on record
11
Years on record
1986–2026
Compliance record
MSHA citations since 2000
2,281
citations
412
significant & substantial
$1,510,220
proposed penalties
$1,334,338
paid to date
88% of proposed penalties paid to date, a $175,882 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
494
inspections on record
15,993
inspection hours
14.3
citations per 100 inspection hours
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.
2,281 citations across 15,993 inspection hours.
Source: MSHA inspections data, updated weekly.
Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$1.5M
proposed penalties
$1.3M
current assessed
$1.3M
paid to date
$3K
outstanding
2,256 assessments are final orders; 40 contested dockets.
As of the most recent assessment on 2026-03-11.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.

Top causes

Incident timeline

2026
5
2025
1
2024
6
2023
12
2022
8
2021
7
2020
10
2019
7
2018
5
2017
8
2016
9
2015
21
2014
18
2013
14 (1f)
2012
13
2011
14
2010
19
2009
19
2008
31
2007
29 (1f)
2006
28
2005
27
2004
19
2003
4
2002
12
2001
16
2000
22
1999
19
1998
20
1997
12
1996
18
1995
20
1994
22
1993
33
1992
28
1991
26
1990
13
1989
17
1988
10
1987
9
1986
1

Mines on record

Fatalities under this operator

2 recorded
January 21, 2013 NV · Metal/Non-Metal belt foreman, maintenance foreman, maintenance supervisor Fatality · MACHINERY
Lhoist North America of Arizona Inc. · Caught in, under or between a moving and a stationary object

Employee worked as lead maintenance mechanic. Believed on morning of accident, Employee went to area Kiln 2 Preheater, Ram 4 to respond to work order. Employee had two-way radio. No witness to accident. Unknown whether employee was inspecting work or performing work on the No 4 ram. Initial examination suggests Employee was injured when ram activated. Ram was not locked out.

December 14, 2007 CA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver Fatality · SLIP OR FALL OF PERSON
Lhoist North America of Arizona Inc. · Fall from machine

The victim was found laying on the ground by the rear bulk trailer.

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The full compliance file on Lhoist North America of Arizona Inc.

A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.