Mining Incidents

Mitsubishi Cement Corp operator

Controlled by Mitsubishi Corp
MSHA operator ID: L10104
Fatalities
1
Total incidents
367
Mines on record
1
Years on record
1988–2025
Compliance record
MSHA citations since 2001
899
citations
163
significant & substantial
$477,281
proposed penalties
$368,367
paid to date
77% of proposed penalties paid to date, a $108,914 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
107
inspections on record
7,183
inspection hours
12.5
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.
899 citations across 7,183 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.
$477K
proposed penalties
$392K
current assessed
$368K
paid to date
$24K
outstanding
869 assessments are final orders; 45 contested dockets.
As of the most recent assessment on 2026-04-08.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.

Top causes

Incident timeline

2025
6
2024
2
2023
8
2022
3
2021
4
2020
8
2019
6
2018
2
2017
5
2016
6
2015
12
2014
10
2013
5
2012
5
2011
6
2010
5
2009
7
2008
15
2007
10
2006
12 (1f)
2005
12
2004
16
2003
8
2002
8
2001
17
2000
12
1999
6
1998
19
1997
30
1996
8
1995
12
1994
9
1993
10
1992
7
1991
19
1990
15
1989
11
1988
11

Mines on record

Fatalities under this operator

1 recorded
August 17, 2006 CA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech Fatality · SLIP OR FALL OF PERSON
Mitsubishi Cement Corp · Fall to lower level, (Not Elsewhere Classified)

Plywood was covering the manhole inside the kiln. The EE pushed the plywoood forward and walked through the manhole, falling approximately 20'. (The victim died August 21, 2006 as a result of his injuries.)

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The full compliance file on Mitsubishi Cement Corp

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.