Mining Incidents

RBC Crusher #1: 37 MSHA citations Metal/Non-Metal

RBC Sand & Gravel Inc · Surface
Darby, Ravalli County, MT  ·  Intermittent
MSHA Mine ID: 2402307

RBC Crusher #1 has $9K 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
0
Years on record
Latest incident
Compliance record
MSHA citations since 2005
37
citations
5
significant & substantial
$8,763
proposed penalties
$8,763
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2003
34
inspections on record
361
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: 361 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

RBC Crusher #1 has $9K 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.
$9K
proposed penalties
$9K
current assessed
$9K
paid to date
$0
outstanding
37 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2024-04-30.
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.
13.5%
significant & substantial
5.4%
high negligence or reckless
13.5%
reasonably likely or greater
24.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 29.7% low, 64.9% moderate, 5.4% 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: 2019-09-19, 6 years ago
2
samples
0
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz1
  • Respirable dust, <.1mg1
Show the individual readings (2)
Date Contaminant Concentration Limit Conc / limit Occupation
2019-09-19 Quartz, respirable, >1% Qtz 0.25 Front-end Loader Operator
2013-09-10 Respirable dust, <.1mg 0 Front-end Loader Operator

Area samples (mill and shop air)

Last sampled: 2015-06-23, 11 years ago
1
samples
Show the individual readings (1)
Date Contaminant Concentration Limit Conc / limit Area sampled
2015-06-23 Respirable dust, <.1mg 0 MP WASH/SCREEN
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. RBC Enterprises LLC 2002 to 2004
  2. RBC Sand & Gravel Inc 2004 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 3
2025 3
2024 3
2023 4
2018 2
2017 2
2016 2
2015 2
2014 1
2013 2
2012 1
2011 2
2010 3
2009 2
2008 3
2007 3
2006 4
2005 4
2004 3
2003 3
2002 2
Source: MSHA quarterly employment and production, updated weekly.

RBC Crusher #1 sits in Ravalli County, Montana, where the Census mining category is 1.2% 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.
Ravalli County, Montana · Population 45,807
1.2%
Mining share of county employment
$71,323
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 105 0 0 0.0
2026 Q1 320 0 0 0.0
2025 Q4 190 0 0 0.0
2025 Q3 188 0 0 0.0
2025 Q2 176 0 0 0.0
2025 Q1 77 0 0 0.0
2024 Q4 92 0 0 0.0
2024 Q3 552 0 0 0.0
Show 70 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 420 1 0 2381.0
2024 Q1 70 0 0 0.0
2023 Q4 300 0 0 0.0
2023 Q3 595 0 0 0.0
2023 Q2 791 0 0 0.0
2018 Q4 43 4 1 93023.3
2018 Q3 518 0 0 0.0
2018 Q2 162 0 0 0.0
2018 Q1 38 2 0 52631.6
2017 Q4 150 0 0 0.0
2017 Q3 270 0 0 0.0
2017 Q2 269 1 0 3717.5
2017 Q1 50 0 0 0.0
2016 Q4 270 0 0 0.0
2016 Q3 424 0 0 0.0
2016 Q2 248 0 0 0.0
2016 Q1 120 1 0 8333.3
2015 Q4 170 0 0 0.0
2015 Q3 512 1 0 1953.1
2015 Q2 510 1 0 1960.8
2015 Q1 4 0 0 0.0
2014 Q4 2 0 0 0.0
2014 Q3 4 0 0 0.0
2014 Q2 22 0 0 0.0
2014 Q1 3 0 0 0.0
2013 Q4 163 0 0 0.0
2013 Q3 525 0 0 0.0
2013 Q2 260 0 0 0.0
2013 Q1 3 0 0 0.0
2012 Q4 2 0 0 0.0
2012 Q3 5 0 0 0.0
2012 Q2 4 0 0 0.0
2012 Q1 2 0 0 0.0
2011 Q4 1 0 0 0.0
2011 Q3 42 0 0 0.0
2011 Q2 290 0 0 0.0
2011 Q1 148 1 0 6756.8
2010 Q4 642 0 0 0.0
2010 Q3 4 0 0 0.0
2010 Q2 328 0 0 0.0
2010 Q1 74 1 0 13513.5
2009 Q4 5 3 0 600000.0
2009 Q3 730 0 0 0.0
2009 Q2 4 0 0 0.0
2009 Q1 3 0 0 0.0
2008 Q4 332 8 0 24096.4
2008 Q3 436 0 0 0.0
2008 Q2 662 0 0 0.0
2008 Q1 50 0 0 0.0
2007 Q4 178 0 0 0.0
2007 Q3 1,320 0 0 0.0
2007 Q2 792 0 0 0.0
2007 Q1 264 0 0 0.0
2006 Q4 265 0 0 0.0
2006 Q3 1,385 0 0 0.0
2006 Q2 360 1 0 2777.8
2006 Q1 670 0 0 0.0
2005 Q4 590 0 0 0.0
2005 Q3 1,052 0 0 0.0
2005 Q2 790 1 0 1265.8
2005 Q1 780 0 0 0.0
2004 Q4 1,200 0 0 0.0
2004 Q3 1,755 0 0 0.0
2004 Q2 1,040 0 0 0.0
2004 Q1 2,080 0 0 0.0
2003 Q4 1,560 0 0 0.0
2003 Q3 960 0 0 0.0
2003 Q2 1,040 0 0 0.0
2003 Q1 1,040 0 0 0.0
2002 Q4 1,040 0 0 0.0

No reportable incidents on file.

MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.