Mining Incidents
Search Operators Mines Alerts Research Controllers Fatalgrams About
English Español
← Back to search

Dredge Chesterfield: 1 recorded fatality Metal/Non-Metal

St Louis, St Louis County, MO  ·  Active
MSHA Mine ID: 2300889

Dredge Chesterfield has $9K in proposed MSHA penalties and $0 outstanding across 2 contested dockets, plus health sampling and the full incident record.

Watch this mine

Email me when a new MSHA incident is filed at Dredge Chesterfield.

Fatalities
1
Total incidents
1
Years on record
2021
Latest incident
Mar 2021
Compliance record
MSHA citations since 2008
30
citations
9
significant & substantial
$8,988
proposed penalties
$8,981
paid to date
100% of proposed penalties paid to date, a $7 gap.
Source: MSHA violations data, updated weekly.
See Gateway Dredging and Contracting's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
61
inspections on record
853
inspection hours
n/a
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.
Rate withheld: 853 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Dredge Chesterfield has $9K in proposed MSHA penalties and $0 outstanding across 2 contested dockets.

Penalty disposition
ⓘ Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$9K
proposed penalties
$9K
current assessed
$9K
paid to date
$0
outstanding
29 assessments are final orders; 2 contested dockets.
Of $11K in penalties contested before the Commission, $6K was upheld in final decisions.
As of the most recent assessment on 2026-02-18.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
ⓘ Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
31.0%
significant & substantial
13.8%
high negligence or reckless
31.0%
reasonably likely or greater
31.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 13.8% low, 72.4% moderate, 13.8% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
When citations were contested
ⓘ Contesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
3 citations taken to the federal commission · 10% of citations on record
  • Settled 2 · 67%
  • Vacated or withdrawn 1 · 33%
33%
S&S designation survived the contest
ⓘ Counts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 3 decided S&S contests · industry: 79%
49%
Penalty reduction in decided contests
$11K proposed, $6K after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2022-01-26.
Contested penalties
ⓘ A reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
Docket Decision Judge Year Proposed / upheld
CENT 2022-0078 Settlement Miller 2022 $11K → $5K
CENT 2020-0002 Settlement Simonton 2019 $142 → $135
Source: FMSHRC civil penalty dockets and decisions (public record), updated weekly.
Health sampling
ⓘ A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.

Metal and nonmetal contaminants (personal samples)
ⓘ Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.

Last sampled: 2024-09-24
0%
of limit-tested samples over the exposure limit
16
samples
1
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg14
  • Quartz, respirable, >1% Qtz1
  • Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (16)
Date Contaminant Concentration Limit Conc / limit Occupation
2024-09-24 Respirable dust, <.1mg 0 Dredge/Barge Operator
2024-09-24 Respirable dust, <.1mg 0 Clam Shell Operator
2018-11-07 Respirable dust, <.1mg 0 Clam Shell Operator
2011-12-28 Unlisted Particulate, respirable, <1% Qtz 0.29 Dredge/Barge Operator
2011-12-28 Respirable dust, <.1mg 0 Backhoe Operator
2010-11-03 Respirable dust, <.1mg 0 Dredge/Barge Operator
2010-11-03 Respirable dust, <.1mg 0 Dredge/Barge Operator
2009-09-15 Quartz, respirable, >1% Qtz 0.41 2.14 0.19 Dredge/Barge Operator
2009-09-15 Respirable dust, <.1mg 0 Dredge/Barge Operator
2004-11-17 Respirable dust, <.1mg 0 Dredge/Barge Operator
2004-11-17 Respirable dust, <.1mg 0 Dredge/Barge Operator
2003-03-26 Respirable dust, <.1mg 0 Laborer, Bullgang
2003-03-26 Respirable dust, <.1mg 0 Pump, Slurry Mix Operator
2003-03-26 Respirable dust, <.1mg 0 Pump, Slurry Mix Operator
2002-03-07 Respirable dust, <.1mg 0 Dredge/Barge Operator
2002-03-07 Respirable dust, <.1mg 0 Dredge/Barge Operator
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.
Ownership history
  1. Limited Leasing Company 1950 to 2011
  2. Gateway Dredging and Contracting 2011 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 4
2025 4
2024 4
2023 4
2022 4
2021 4
2020 4
2019 4
2018 4
2017 4
2016 4
2015 4
2014 4
2013 4
2012 4
2011 3
2010 3
2009 3
2008 3
2007 3
2006 3
2005 3
2004 3
2003 3
2002 3
2001 3
2000 3
Source: MSHA quarterly employment and production, updated weekly.

Dredge Chesterfield sits in St. Louis County, Missouri, where the Census mining category is 0.1% of county employment.

Local economic context
ⓘ County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
St. Louis County, Missouri · Population 996,618
0.1%
Mining share of county employment
$81,340
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
Quarterly safety rates
ⓘ Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2026 Q2 1,831 0 0 0.0
2026 Q1 1,439 1 1 694.9
2025 Q4 1,574 0 0 0.0
2025 Q3 1,636 0 0 0.0
2025 Q2 1,614 0 0 0.0
2025 Q1 1,060 0 0 0.0
2024 Q4 1,425 0 0 0.0
2024 Q3 1,465 0 0 0.0
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 1,614 0 0 0.0
2024 Q1 1,380 1 0 724.6
2023 Q4 1,502 0 0 0.0
2023 Q3 1,238 0 0 0.0
2023 Q2 1,481 0 0 0.0
2023 Q1 1,418 0 0 0.0
2022 Q4 1,539 0 0 0.0
2022 Q3 1,637 0 0 0.0
2022 Q2 1,510 0 0 0.0
2022 Q1 1,166 1 0 857.6
2021 Q4 1,614 1 1 619.6
2021 Q3 1,639 0 0 0.0
2021 Q2 1,683 0 0 0.0
2021 Q1 1,206 1 0 829.2
2020 Q4 1,852 1 0 540.0
2020 Q3 1,642 0 0 0.0
2020 Q2 1,632 0 0 0.0
2020 Q1 1,453 0 0 0.0
2019 Q4 1,517 0 0 0.0
2019 Q3 1,715 2 1 1166.2
2019 Q2 1,419 0 0 0.0
2019 Q1 1,086 0 0 0.0
2018 Q4 1,296 2 0 1543.2
2018 Q3 1,534 0 0 0.0
2018 Q2 1,468 0 0 0.0
2018 Q1 1,199 1 0 834.0
2017 Q4 1,355 0 0 0.0
2017 Q3 1,338 2 1 1494.8
2017 Q2 1,496 0 0 0.0
2017 Q1 1,319 0 0 0.0
2016 Q4 1,664 0 0 0.0
2016 Q3 1,344 0 0 0.0
2016 Q2 1,427 2 1 1401.5
2016 Q1 1,353 0 0 0.0
2015 Q4 1,566 0 0 0.0
2015 Q3 1,768 1 0 565.6
2015 Q2 1,490 0 0 0.0
2015 Q1 1,051 1 0 951.5
2014 Q4 1,501 0 0 0.0
2014 Q3 1,804 0 0 0.0
2014 Q2 1,773 0 0 0.0
2014 Q1 806 0 0 0.0
2013 Q4 1,522 0 0 0.0
2013 Q3 1,743 0 0 0.0
2013 Q2 1,448 0 0 0.0
2013 Q1 1,316 0 0 0.0
2012 Q4 1,620 0 0 0.0
2012 Q3 1,666 2 1 1200.5
2012 Q2 1,073 0 0 0.0
2012 Q1 912 0 0 0.0
2011 Q4 1,037 1 1 964.3
2011 Q3 1,215 0 0 0.0
2011 Q2 1,300 2 0 1538.5
2011 Q1 617 0 0 0.0
2010 Q4 917 1 0 1090.5
2010 Q3 1,261 0 0 0.0
2010 Q2 991 3 1 3027.2
2010 Q1 414 0 0 0.0
2009 Q4 959 2 1 2085.5
2009 Q3 1,046 1 0 956.0
2009 Q2 978 0 0 0.0
2009 Q1 723 0 0 0.0
2008 Q4 998 0 0 0.0
2008 Q3 1,115 0 0 0.0
2008 Q2 1,091 0 0 0.0
2008 Q1 696 1 0 1436.8
2007 Q4 1,017 0 0 0.0
2007 Q3 1,089 0 0 0.0
2007 Q2 1,153 0 0 0.0
2007 Q1 714 0 0 0.0
2006 Q4 841 0 0 0.0
2006 Q3 1,101 0 0 0.0
2006 Q2 1,052 0 0 0.0
2006 Q1 978 0 0 0.0
2005 Q4 1,066 0 0 0.0
2005 Q3 1,084 0 0 0.0
2005 Q2 1,203 0 0 0.0
2005 Q1 970 0 0 0.0
2004 Q4 1,135 0 0 0.0
2004 Q3 1,173 0 0 0.0
2004 Q2 1,181 0 0 0.0
2004 Q1 663 0 0 0.0
2003 Q4 1,253 0 0 0.0
2003 Q3 1,221 0 0 0.0
2003 Q2 1,156 0 0 0.0
2003 Q1 552 0 0 0.0
2002 Q4 1,041 0 0 0.0
2002 Q3 1,104 0 0 0.0
2002 Q2 1,006 0 0 0.0
2002 Q1 850 0 0 0.0
2001 Q4 1,099 0 0 0.0
2001 Q3 1,420 0 0 0.0
2001 Q2 1,353 0 0 0.0
2001 Q1 924 0 0 0.0
2000 Q4 837 0 0 0.0
2000 Q3 978 0 0 0.0
2000 Q2 1,155 0 0 0.0
2000 Q1 1,036 0 0 0.0

Fatalities at this mine

1 recorded
March 12, 2021 MO · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer Fatality · MACHINERY
Gateway Dredging and Contracting · Struck by... (Not Elsewhere Classified)

Employee was trying to insert a spud pin into a spud before the spud stopped moving. Pin struck victim in the head.