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: 211 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Crusher #7 has $6K in proposed MSHA penalties and $0 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.
$6K
proposed penalties
$6K
current assessed
$6K
paid to date
$0
outstanding
29 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2010-05-18.
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.
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: 2008-06-24, 18 years ago
0%
of limit-tested samples over the exposure limit
8
samples
8
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz6
Nuisance dust, respirable, <1% Qtz2
Show the individual readings (8)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2008-06-24
Quartz, respirable, >1% Qtz
0.31
2.13
0.15
Cleanup Man
2008-06-24
Quartz, respirable, >1% Qtz
0.42
2.68
0.16
Crusher Oper/Worker
2008-06-24
Nuisance dust, respirable, <1% Qtz
0.15
10
0.02
Truck Driver
2004-03-17
Quartz, respirable, >1% Qtz
0.43
0.88
0.49
Crusher Oper/Worker
2004-03-17
Nuisance dust, respirable, <1% Qtz
1.56
10
0.16
Front-end Loader Operator
2004-03-17
Quartz, respirable, >1% Qtz
0.64
0.87
0.74
Crusher Oper/Worker
2004-03-17
Quartz, respirable, >1% Qtz
0.44
1.48
0.30
Truck Driver
2004-03-17
Quartz, respirable, >1% Qtz
0.6
1.08
0.56
Truck Driver
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.
Crusher #7 recorded 7.44 reportable injury cases per 100 full-time workers in 2009.
Injury rate, 2009
ⓘThis rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.
7.44
total case rate
7.44
days-away rate
0.000
fatality rate
Above average. The US metal and nonmetal mining average was 2.82 and the all-US-mining average was 3.36 cases per 100 workers.
In Iowa, metal and nonmetal mining averaged 3.33 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Year
total case rate
days-away
fatal
2009 *
7.44
7.44
0.000
2008 *
6.58
0.00
0.000
2007 *
7.36
7.36
0.000
2006 *
0.00
0.00
0.000
2004 *
17.02
17.02
0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2011
0
2010
6
2009
13
2008
13
2007
13
2006
9
2005
8
2004
10
2003
2
2002
1
2001
7
Source: MSHA quarterly employment and production, updated weekly.
Crusher #7 sits in Pottawattamie County, Iowa, where the Census mining category is 0.0% 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.
Pottawattamie County, Iowa · Population 93,407
0.0%
Mining share of county employment
$71,446
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
2011 Q1
0
0
0
2010 Q4
0
0
0
2010 Q2
4,028
3
0
744.8
2010 Q1
4,974
3
1
603.1
2009 Q4
5,021
0
0
0.0
2009 Q3
6,836
0
0
0.0
2009 Q2
8,311
0
0
0.0
2009 Q1
6,714
1
0
148.9
Show 30 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2008 Q4
6,495
0
0
0.0
2008 Q3
8,684
0
0
0.0
2008 Q2
8,165
5
1
612.4
2008 Q1
7,032
4
1
568.8
2007 Q4
7,060
0
0
0.0
2007 Q3
7,855
0
0
0.0
2007 Q2
7,240
0
0
0.0
2007 Q1
5,034
7
1
1390.5
2006 Q4
5,188
0
0
0.0
2006 Q3
5,299
0
0
0.0
2006 Q2
5,335
0
0
0.0
2006 Q1
4,630
3
2
647.9
2005 Q4
4,504
0
0
0.0
2005 Q3
4,113
0
0
0.0
2005 Q2
5,859
0
0
0.0
2005 Q1
3,517
0
0
0.0
2004 Q4
6,469
0
0
0.0
2004 Q3
5,312
0
0
0.0
2004 Q2
7,315
0
0
0.0
2004 Q1
4,407
4
0
907.6
2003 Q4
2,722
0
0
0.0
2003 Q2
0
0
0
2003 Q1
448
0
0
0.0
2002 Q4
496
0
0
0.0
2002 Q3
553
0
0
0.0
2002 Q2
512
0
0
0.0
2002 Q1
1,066
0
0
0.0
2001 Q4
1,893
0
0
0.0
2001 Q3
3,065
0
0
0.0
2001 Q2
5,058
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
5 on file
2009 · 1 incident
October 21, 2009IA · Metal/Non-Metalhaul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driverHANDLING OF MATERIALS
Employee was loading scrap iron into a loader bucket, felt pain in abdomen. Doctor determined it was just a strain and released him back to work on the 26th.
2008 · 1 incident
May 13, 2008IA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS
Climbing into 980 loader, missed handrail, slipped off step, fell to ground and hurt right knee. Doctor is sending him to an orthopedic surgeon - he is not expected to return to work this week.
EMPLOYEE WAS REHANGING A POWER CABLE TO PREVENT IT FROM RUBBING ON FRAME. A ROCK (APPROX 8") CAME OFF OF THE BELT AND STRUCK HIM ON THE HEAD. EMPLOYEE RECEIVED A MILD CONCUSSION. EMPLOYEE WAS WEARING A HARD HAT.