Mining Incidents

South Plant: 82 MSHA citations Metal/Non-Metal

Arnold, Jefferson County, MO  ·  Abandoned
MSHA Mine ID: 2300720

South Plant has $27K in proposed MSHA penalties and $201 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
2
Years on record
2007–2012
Latest incident
Mar 2012
Compliance record
MSHA citations since 2003
82
citations
22
significant & substantial
$27,344
proposed penalties
$27,143
paid to date
99% of proposed penalties paid to date, a $201 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2003
36
inspections on record
519
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: 519 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Imminent-danger orders
A Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.
1
Section 107(a) orders
Most recent order: 2013-09-11.
On record since 2013.
Source: MSHA imminent-danger order records, updated weekly.

South Plant has $27K in proposed MSHA penalties and $201 outstanding across 0 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.
$27K
proposed penalties
$27K
current assessed
$27K
paid to date
$201
outstanding
80 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2014-12-29.
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.
27.5%
significant & substantial
17.5%
high negligence or reckless
27.5%
reasonably likely or greater
50.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 17.5% low, 65.0% moderate, 17.5% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, 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: 2013-11-21, 12 years ago
0%
of limit-tested samples over the exposure limit
32
samples
23
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz19
  • Respirable dust, <.1mg7
  • Nuisance dust, respirable, <1% Qtz4
  • Unlisted Particulate, respirable, <1% Qtz2
Show the individual readings (32)
Date Contaminant Concentration Limit Conc / limit Occupation
2013-11-21 Nuisance dust, respirable, <1% Qtz 0.15 10 0.02 Backhoe Operator
2013-11-21 Quartz, respirable, >1% Qtz 0.13 1.36 0.10 Laborer, Bullgang
2013-11-21 Respirable dust, <.1mg 0 Front-end Loader Operator
2013-09-11 Quartz, respirable, >1% Qtz 0.24 1.44 0.17 Front-end Loader Operator
2013-09-11 Nuisance dust, respirable, <1% Qtz 0.14 10 0.01 Front-end Loader Operator
2013-09-11 Quartz, respirable, >1% Qtz 0.66 1.21 0.55 Laborer, Bullgang
2012-04-26 Respirable dust, <.1mg 0 Utility Man
2012-04-26 Quartz, respirable, >1% Qtz 0.2 1.03 0.19 Utility Man
2011-10-27 Quartz, respirable, >1% Qtz 0.12 1.3 0.09 Utility Man
2011-10-27 Quartz, respirable, >1% Qtz 0.98 1.31 0.75 Utility Man
2011-08-31 Respirable dust, <.1mg 0 Front-end Loader Operator
2011-08-31 Quartz, respirable, >1% Qtz 0.26 1.89 0.14 Front-end Loader Operator
2010-04-01 Quartz, respirable, >1% Qtz 0.2 1.64 0.12 Front-end Loader Operator
2010-04-01 Quartz, respirable, >1% Qtz 0.76 1.37 0.55 Utility Man
2009-09-03 Unlisted Particulate, respirable, <1% Qtz 0.25 Front-end Loader Operator
2009-09-03 Quartz, respirable, >1% Qtz 0.62 1.44 0.43 Utility Man
2009-09-03 Respirable dust, <.1mg 0 Front-end Loader Operator
2007-10-10 Quartz, respirable, >1% Qtz 0.55 0.59 0.93 Utility Man
2007-10-10 Quartz, respirable, >1% Qtz 0.32 1 0.32 Utility Man
2007-10-10 Quartz, respirable, >1% Qtz 0.28 1.26 0.22 Front-end Loader Operator
2007-04-25 Quartz, respirable, >1% Qtz 0.32 0.83 0.39 Utility Man
2007-04-25 Respirable dust, <.1mg 0 Rotary Bucket Ex. Operator
2007-04-25 Nuisance dust, respirable, <1% Qtz 0.3 10 0.03 Front-end Loader Operator
2005-12-21 Quartz, respirable, >1% Qtz 0.79 0.99 0.80 Laborer, Bullgang
2005-12-21 Quartz, respirable, >1% Qtz 0.3 2.26 0.13 Laborer, Bullgang
2005-12-21 Respirable dust, <.1mg 0 Front-end Loader Operator
2004-12-21 Quartz, respirable, >1% Qtz 0.27 0.94 0.29 Laborer, Bullgang
2004-12-21 Nuisance dust, respirable, <1% Qtz 1.3 10 0.13 Front-end Loader Operator
2004-12-21 Quartz, respirable, >1% Qtz 0.43 1.42 0.30 Laborer, Bullgang
2004-12-21 Quartz, respirable, >1% Qtz 0.34 1.2 0.28 Shovel Operator
2004-07-21 Respirable dust, <.1mg 0 Front-end Loader Operator
2004-07-21 Unlisted Particulate, respirable, <1% Qtz 0.18 Shovel 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. Simpson Sand & Gravel Company Inc 1950 to 2003
  2. Simpson Materials Company, LLC 2003 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2015 3
2014 6
2013 7
2012 7
2011 5
2010 8
2009 6
2008 8
2007 8
2006 7
2005 8
2004 8
2003 5
Source: MSHA quarterly employment and production, updated weekly.

South Plant sits in Jefferson County, Missouri, where the Census mining category is 0.2% 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.
Jefferson County, Missouri · Population 228,227
0.2%
Mining share of county employment
$80,522
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
2015 Q2 442 0 0 0.0
2015 Q1 1,477 0 0 0.0
2014 Q4 2,954 1 0 338.5
2014 Q3 2,991 2 1 668.7
2014 Q2 3,169 0 0 0.0
2014 Q1 3,277 0 0 0.0
2013 Q4 3,242 3 0 925.4
2013 Q3 3,498 5 3 1429.4
Show 41 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2013 Q2 4,178 2 1 478.7
2013 Q1 3,375 0 0 0.0
2012 Q4 3,506 4 2 1140.9
2012 Q3 3,900 0 0 0.0
2012 Q2 3,894 11 4 2824.9
2012 Q1 2,996 0 0 0.0
2011 Q4 2,998 8 4 2668.4
2011 Q3 3,611 0 0 0.0
2011 Q2 3,071 5 1 1628.1
2011 Q1 2,952 1 0 338.8
2010 Q4 4,329 0 0 0.0
2010 Q3 4,806 0 0 0.0
2010 Q2 4,967 3 2 604.0
2010 Q1 3,496 1 0 286.0
2009 Q4 4,163 2 0 480.4
2009 Q3 3,937 1 0 254.0
2009 Q2 2,867 0 0 0.0
2009 Q1 2,780 10 1 3597.1
2008 Q4 4,265 0 0 0.0
2008 Q3 4,964 0 0 0.0
2008 Q2 4,531 2 0 441.4
2008 Q1 4,450 0 0 0.0
2007 Q4 5,040 3 2 595.2
2007 Q3 5,060 0 0 0.0
2007 Q2 5,222 2 0 383.0
2007 Q1 3,476 0 0 0.0
2006 Q4 3,597 1 0 278.0
2006 Q3 3,881 0 0 0.0
2006 Q2 4,626 4 0 864.7
2006 Q1 3,793 0 0 0.0
2005 Q4 4,359 1 0 229.4
2005 Q3 5,129 0 0 0.0
2005 Q2 5,247 1 0 190.6
2005 Q1 4,603 0 0 0.0
2004 Q4 4,218 2 0 474.2
2004 Q3 2,748 1 0 363.9
2004 Q2 4,645 0 0 0.0
2004 Q1 5,124 0 0 0.0
2003 Q4 3,447 0 0 0.0
2003 Q3 3,523 0 0 0.0
2003 Q2 4,004 3 1 749.3
No fatalities recorded at this mine.

Reportable incidents

2 on file

2012 · 1 incident

March 19, 2012 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Simpson Materials Company, LLC · Over-exertion in lifting objects

*****reported 4/17/12*****packing bags, boxes, & buckets up steep hill, strained groin.

2007 · 1 incident

April 12, 2007 MO · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Simpson Materials Company, LLC · Over-exertion in pulling or pushing objects

While pulling a pole out of a drilled hole that collasped with rock, he felt a burning sensation in the groin area.