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: 142 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
PLANT 852 has $755 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.
$755
proposed penalties
$755
current assessed
$755
paid to date
$0
outstanding
12 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2003-04-28.
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: 2005-02-01, 21 years ago
0%
of limit-tested samples over the exposure limit
10
samples
9
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz9
Respirable dust, <.1mg1
Show the individual readings (10)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2005-02-01
Quartz, respirable, >1% Qtz
0.45
1.92
0.23
Truck Driver
2005-02-01
Quartz, respirable, >1% Qtz
0.39
0.63
0.62
Crusher Oper/Worker
2005-02-01
Quartz, respirable, >1% Qtz
0.18
1.05
0.17
Laborer, Bullgang
2005-02-01
Quartz, respirable, >1% Qtz
0.38
1.62
0.23
Cleanup Man
2005-02-01
Quartz, respirable, >1% Qtz
0.34
2.05
0.17
Front-end Loader Operator
2003-04-29
Quartz, respirable, >1% Qtz
0.31
1.2
0.26
Crusher Oper/Worker
2003-04-29
Quartz, respirable, >1% Qtz
0.44
1.79
0.25
Laborer, Bullgang
2003-04-29
Quartz, respirable, >1% Qtz
0.7
2.45
0.29
Crusher Oper/Worker
2003-04-29
Respirable dust, <.1mg
0
Laborer, Bullgang
2003-04-29
Quartz, respirable, >1% Qtz
0.34
2.24
0.15
Laborer, Bullgang
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.
PLANT 852 recorded 0.00 reportable injury cases per 100 full-time workers in 2004.
Injury rate, 2004
ⓘ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.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
Below average. The US metal and nonmetal mining average was 3.73 and the all-US-mining average was 4.33 cases per 100 workers.
In Iowa, metal and nonmetal mining averaged 3.06 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
2004 *
0.00
0.00
0.000
2003 *
0.00
0.00
0.000
2002 *
0.00
0.00
0.000
2001 *
9.85
9.85
0.000
2000 *
0.00
0.00
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
2005
3
2004
13
2003
14
2002
14
2001
11
2000
11
Source: MSHA quarterly employment and production, updated weekly.
PLANT 852 sits in Polk 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.
Polk County, Iowa · Population 497,441
0.0%
Mining share of county employment
$81,621
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
2005 Q4
870
0
0
0.0
2005 Q2
1,755
0
0
0.0
2005 Q1
1,535
0
0
0.0
2004 Q4
7,586
0
0
0.0
2004 Q3
7,348
0
0
0.0
2004 Q2
8,202
0
0
0.0
2004 Q1
4,390
0
0
0.0
2003 Q4
5,798
0
0
0.0
Show 15 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2003 Q3
7,539
0
0
0.0
2003 Q2
7,586
2
0
263.6
2003 Q1
4,249
0
0
0.0
2002 Q4
6,162
0
0
0.0
2002 Q3
8,380
0
0
0.0
2002 Q2
9,190
2
0
217.6
2002 Q1
7,552
0
0
0.0
2001 Q4
5,910
0
0
0.0
2001 Q3
5,792
6
1
1035.9
2001 Q2
6,907
0
0
0.0
2001 Q1
1,689
0
0
0.0
2000 Q4
3,912
0
0
0.0
2000 Q3
6,440
0
0
0.0
2000 Q2
7,154
0
0
0.0
2000 Q1
4,554
2
0
439.2
No fatalities recorded at this mine.
Reportable incidents
7 on file
2001 · 1 incident
June 18, 2001IA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDTOOLS (NONPOWERED)
EE WALKED IN FRONT OF RIP RAP PLANT DISCHARGE CHUTE AS PLANT WAS BEING STARTED, DISPITE YELLED WARNINGS FROM CO-WORKERS. TWO BOULDERS STRUCK EE CAUSING MULTIPLE INJURIES.
1996 · 1 incident
September 30, 1996IA · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorHANDTOOLS (NONPOWERED)
EMPLOYEE PICKED UP LINER PLATE FROM BACK OF PICKUP TRUCK AND FELT STRAIN IN HIS BACK. UPON CLOSER EXAMINATION BY HIS SURGEON IT WAS DETERMINED THAT HE HAD A RUPTURE IN HIS RIGHT GROIN AREA. TH IS CAME FROM PAIN STARTING A WEEK AFTER THE BACK STRAIN, IN HIS RIGHT GROIN AREA.
1990 · 1 incident
July 31, 1990IA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON
EMPL CRAWLING UNDER SOME SCREENS LEANING ON A CATWALK.RAISED UP TOO SOON AND HIT NOSE ON SCREEN KNOCKING HIM DOWN TO CATWALK.LEFT KNEE SUSTAINED LACERATION REQ STITCHES.
EMPL WAS ASSISTING IN REMOVING HAMMERS FROM HAMMER MILL ANOTHER EMPL STRUCK HAMMER WITH A MAUL TO LOOSEN IT WHEN A PIECE OF STEEL FLEW OF EQUIPMENT AND STRUCK EMPL L FOREARM PUNCTURING IT
February 23, 1989IA · Metal/Non-Metalmine manager, mine foreman, mine ownerHANDLING OF MATERIALS
EMPLOYEE WAS PICKING UP ENDLOADER BIT OFF OF THE FLOOR WHEN BIT SLIPPED AND SMASHED FINGER AGINST THE FLOOR.RESULT WAS A LACERATED LITTLE FINGER ON HIS RIGHT HAND THAT REQUIRED STITCHES.
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