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Portable Rock Drill #315: 18 MSHA citations Metal/Non-Metal

BMC Aggregates LC · Surface
Elk Run Heights, Black Hawk County, IA  ·  Abandoned
MSHA Mine ID: 1302198

Portable Rock Drill #315 has $2K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
1
Years on record
1995
Latest incident
Aug 1995
Compliance record
MSHA citations since 2000
18
citations
2
significant & substantial
$1,851
proposed penalties
$1,851
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See BMC Aggregates LC's full MSHA compliance history →
Inspection activity
MSHA inspections since 2000
24
inspections on record
170
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: 170 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Portable Rock Drill #315 has $2K 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.
$2K
proposed penalties
$2K
current assessed
$2K
paid to date
$0
outstanding
18 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2022-04-04.
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.
11.1%
significant & substantial
0.0%
high negligence or reckless
11.1%
reasonably likely or greater
72.2%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 5.6% low, 94.4% moderate, 0.0% 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: 2025-03-18
0%
of limit-tested samples over the exposure limit
6
samples
2
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg4
  • Nuisance dust, respirable, <1% Qtz2
Show the individual readings (6)
Date Contaminant Concentration Limit Conc / limit Occupation
2025-03-18 Respirable dust, <.1mg 0 Drill Operator, Rotary
2021-09-08 Respirable dust, <.1mg 0 Drill Operator, Rotary
2010-04-20 Respirable dust, <.1mg 0 Front-end Loader Operator
2010-04-20 Nuisance dust, respirable, <1% Qtz 0.14 10 0.01 Front-end Loader Operator
2003-06-10 Respirable dust, <.1mg 0 Front-end Loader Operator
2003-06-10 Nuisance dust, respirable, <1% Qtz 0.12 10 0.01 Utility Man
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. Basic Materials Corp 1994 to 2006
  2. BMC Aggregates LC 2006 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2025 1
2024 1
2023 1
2022 1
2021 1
2015 0
2014 0
2013 2
2012 2
2011 5
2010 4
2009 4
2008 5
2007 4
2006 4
2005 3
2004 3
2003 3
2002 4
2001 3
2000 2
Source: MSHA quarterly employment and production, updated weekly.

Portable Rock Drill #315 sits in Black Hawk County, Iowa, 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.
Black Hawk County, Iowa · Population 130,693
0.1%
Mining share of county employment
$64,581
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
2025 Q4 0 0 0
2025 Q3 403 0 0 0.0
2025 Q2 525 0 0 0.0
2025 Q1 67 0 0 0.0
2024 Q4 335 0 0 0.0
2024 Q3 539 0 0 0.0
2024 Q2 341 0 0 0.0
2024 Q1 0 0 0
Show 73 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 378 0 0 0.0
2023 Q3 517 0 0 0.0
2023 Q2 559 0 0 0.0
2023 Q1 190 0 0 0.0
2022 Q4 422 0 0 0.0
2022 Q3 697 0 0 0.0
2022 Q2 592 1 0 1689.2
2022 Q1 94 0 0 0.0
2021 Q4 522 0 0 0.0
2021 Q3 662 1 0 1510.6
2021 Q2 364 0 0 0.0
2021 Q1 0 0 0
2015 Q1 0 0 0
2014 Q4 0 0 0
2014 Q3 0 0 0
2014 Q2 0 0 0
2014 Q1 0 0 0
2013 Q4 40 0 0 0.0
2013 Q3 772 0 0 0.0
2013 Q2 1,147 0 0 0.0
2013 Q1 0 0 0
2012 Q4 1,152 0 0 0.0
2012 Q3 1,245 0 0 0.0
2012 Q2 901 1 1 1109.9
2012 Q1 157 0 0 0.0
2011 Q4 2,284 0 0 0.0
2011 Q3 2,256 0 0 0.0
2011 Q2 2,093 2 1 955.6
2011 Q1 1,858 0 0 0.0
2010 Q4 1,906 0 0 0.0
2010 Q3 3,144 0 0 0.0
2010 Q2 2,134 3 0 1405.8
2010 Q1 2,373 0 0 0.0
2009 Q4 1,952 0 0 0.0
2009 Q3 2,128 0 0 0.0
2009 Q2 1,986 1 0 503.5
2009 Q1 1,803 0 0 0.0
2008 Q4 1,962 0 0 0.0
2008 Q3 2,307 0 0 0.0
2008 Q2 2,921 2 0 684.7
2008 Q1 1,620 0 0 0.0
2007 Q4 2,307 0 0 0.0
2007 Q3 2,184 6 0 2747.3
2007 Q2 1,909 0 0 0.0
2007 Q1 1,710 0 0 0.0
2006 Q4 1,713 0 0 0.0
2006 Q3 1,698 0 0 0.0
2006 Q2 1,875 0 0 0.0
2006 Q1 1,531 0 0 0.0
2005 Q4 1,668 0 0 0.0
2005 Q3 1,928 0 0 0.0
2005 Q2 1,797 0 0 0.0
2005 Q1 1,453 0 0 0.0
2004 Q4 1,822 0 0 0.0
2004 Q3 2,075 0 0 0.0
2004 Q2 1,719 0 0 0.0
2004 Q1 1,614 0 0 0.0
2003 Q4 1,224 0 0 0.0
2003 Q3 1,807 0 0 0.0
2003 Q2 1,825 0 0 0.0
2003 Q1 1,581 0 0 0.0
2002 Q4 1,723 0 0 0.0
2002 Q3 1,669 0 0 0.0
2002 Q2 1,670 0 0 0.0
2002 Q1 1,727 0 0 0.0
2001 Q4 1,653 0 0 0.0
2001 Q3 1,129 0 0 0.0
2001 Q2 1,941 0 0 0.0
2001 Q1 673 0 0 0.0
2000 Q4 584 0 0 0.0
2000 Q3 1,012 1 0 988.1
2000 Q2 881 0 0 0.0
2000 Q1 810 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

1995 · 1 incident

August 15, 1995 IA · Metal/Non-Metal superintendent MACHINERY
Basic Materials Corp · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS USING AN ELECTRIC IMPACT WRENCH TO CHANGE SCREENS. EMPLOYEE WAS REMOVING NUT FROMT EH IMPACT SOCKET AND ACCIDENTLY BUMPED THE TRIGGE WHICH SCREWED THE NUT ONTO HIS INDEX FINGER.