7912 Bit Split Plant has $3K in proposed MSHA penalties and $0 outstanding across 1 contested dockets, plus health sampling and the full incident record.
Watch this mine
Email me when a new MSHA incident is filed at 7912 Bit Split Plant.
Fatalities
0
Total incidents
9
Years on record
2000–2022
Latest incident
Jul 2022
Compliance record
MSHA citations since 2000
27
citations
4
significant & substantial
$2,563
proposed penalties
$2,563
paid to date
100% of proposed penalties paid to date, a $0 gap.
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: 415 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
7912 Bit Split Plant has $3K in proposed MSHA penalties and $0 outstanding across 1 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.
$3K
proposed penalties
$3K
current assessed
$3K
paid to date
$0
outstanding
27 assessments are final orders; 1 contested dockets.
Of $100 in penalties contested before the Commission, $100 was upheld in final decisions.
As of the most recent assessment on 2020-05-26.
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.
When citations were contested
ⓘContesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
1citations taken to the federal commission · 4% of citations on record
Settled
1 · 100%
100%
S&S designation survived the contest
ⓘCounts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 1 decided S&S contests · industry: 79%
0%
Penalty reduction in decided contests
$100 proposed, $100 after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2010-09-01.
Contested penalties
ⓘA reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
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: 2025-10-28
0%
of limit-tested samples over the exposure limit
14
samples
9
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz9
Respirable dust, <.1mg5
Show the individual readings (14)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2025-10-28
Quartz, respirable, >1% Qtz
0.14
0.63
0.22
Utility Man
2023-05-10
Quartz, respirable, >1% Qtz
0.41
1.32
0.31
Front-end Loader Operator
2023-05-10
Quartz, respirable, >1% Qtz
0.15
0.75
0.20
Laborer, Bullgang
2023-05-10
Respirable dust, <.1mg
0
Front-end Loader Operator
2023-05-10
Quartz, respirable, >1% Qtz
0.24
0.68
0.35
Complete Load-Haul-Dump
2016-05-10
Respirable dust, <.1mg
0
Front-end Loader Operator
2016-05-10
Quartz, respirable, >1% Qtz
0.22
0.58
0.38
Bulldozer Operator
2016-05-10
Quartz, respirable, >1% Qtz
0.17
1.02
0.17
Crusher Oper/Worker
2010-06-23
Respirable dust, <.1mg
0
Front-end Loader Operator
2010-06-23
Respirable dust, <.1mg
0
Dry Screen Plant Operator
2009-04-14
Quartz, respirable, >1% Qtz
0.71
1.22
0.58
Laborer, Bullgang
2005-04-19
Quartz, respirable, >1% Qtz
0.24
2.01
0.12
Front-end Loader Operator
2005-04-19
Respirable dust, <.1mg
0
Front-end Loader Operator
2005-04-19
Quartz, respirable, >1% Qtz
0.23
1.4
0.16
Crusher Oper/Worker
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
3
2025
4
2024
6
2023
6
2022
4
2021
5
2020
4
2019
4
2018
4
2017
4
2016
5
2015
6
2014
4
2013
3
2012
3
2011
4
2010
4
2009
4
2008
5
2007
5
2006
3
2005
4
2004
2
2003
2
2002
3
2001
3
2000
3
Source: MSHA quarterly employment and production, updated weekly.
7912 Bit Split Plant sits in Calhoun County, Michigan, 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.
Calhoun County, Michigan · Population 133,846
0.1%
Mining share of county employment
$60,385
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
EE was cutting a piece of belt for the jaw feeder. EE was holding the rubber with left hand and cutting with the right. While cutting, the utility knife slipped and struck the EE on the left inside forearm. EE was cutting towards self. EE sustained a laceration that required 5 stitches. EE continues to work and did not miss any days of work.
EE was trying to remove a large piece of metal from the conveyor magnet. Typical pieces were not this large. The EE used a crowbar to open a gap between the metal and the magnet. When trying to pry the piece off with a shovel, the shovel slipped causing the metal plate to snap back to the magnet, crushing the EE's left thumb.
2018 · 1 incident
July 31, 2018MI · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
EE was removing the bucket from the skid steer. EE had the bucket lifted off the ground. When ee got it unhooked the bucket came off and landed on feet.
2014 · 1 incident
May 28, 2014MI · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanOTHER
Employee was testing wiring in the electrical panel of generator 7633, an arc flash occurred sending a "ball of fire" out of the panel. The fire caused burns to the top of both the employee's hands.
2008 · 1 incident
June 26, 2008MI · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON
EE was standing on the belt guard trying to loosen a mantle nut on the main frame. He had both feet on belt guard. He went to step off onto the lower platform and slipped. He tried to catch himself on the guard rail but missed striking his upper right side rib cage on the adjusting bolt on the main frame of unit.
2007 · 1 incident
August 1, 2007MI · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanMACHINERY
Loader step was covered in snow. Employee slipped while exiting the loader. Diagnosis is first degree right ankle sprain. Able to return to work immediately. Told to take Motrin and wear boots that supported the ankle.
2000 · 1 incident
April 14, 2000MI · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerPOWERED HAULAGE
H & D Inc · Struck by... (Not Elsewhere Classified)
END OF RIGHT FOOT UNDER LOADER BUCKET WHEN LOWERED. FRACTURED BIG TOE ON RIGHT FOOT.
Related mines
Other mines operated by Rieth-Riley Construction Co., Inc.