SPRING VALLEY - 346 has $436 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
5
Years on record
1987–1996
Latest incident
Mar 1996
Compliance record
MSHA citations since 2000
6
citations
0
significant & substantial
$436
proposed penalties
$436
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: 110 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
SPRING VALLEY - 346 has $436 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.
$436
proposed penalties
$436
current assessed
$436
paid to date
$0
outstanding
6 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-05-01.
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: 2002-05-01, 24 years ago
0%
of limit-tested samples over the exposure limit
4
samples
1
limit-tested
Most sampled contaminants
Respirable dust, <.1mg2
Quartz, respirable, >1% Qtz1
Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (4)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2002-05-01
Quartz, respirable, >1% Qtz
0.18
0.89
0.20
Washer Operator
2002-05-01
Respirable dust, <.1mg
0
Utility Man
2002-05-01
Respirable dust, <.1mg
0
Front-end Loader Operator
2002-05-01
Unlisted Particulate, respirable, <1% Qtz
0.29
Front-end Loader Operator
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.
SPRING VALLEY - 346 recorded 0.00 reportable injury cases per 100 full-time workers in 2003.
Injury rate, 2003
ⓘ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
No reportable injury cases in any year shown. Employee-hours were reported in each of those years, so these are true zeros rather than missing data. Citations, listed in the compliance record above, are inspector-found violations and are counted separately from worker injuries.
Below average. The US metal and nonmetal mining average was 3.76 and the all-US-mining average was 4.43 cases per 100 workers.
In Ohio, metal and nonmetal mining averaged 4.36 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
2003 *
0.00
0.00
0.000
2002 *
0.00
0.00
0.000
2001 *
0.00
0.00
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
2026
2
2004
7
2003
11
2002
15
2001
15
2000
15
Source: MSHA quarterly employment and production, updated weekly.
SPRING VALLEY - 346 sits in Greene County, Ohio, 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.
Greene County, Ohio · Population 168,531
0.1%
Mining share of county employment
$85,218
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
0
1
0
2026 Q1
1,531
0
0
0.0
2004 Q4
0
0
0
2004 Q2
5,829
0
0
0.0
2004 Q1
5,571
0
0
0.0
2003 Q4
5,417
0
0
0.0
2003 Q3
5,947
0
0
0.0
2003 Q2
5,784
2
0
345.8
Show 13 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2003 Q1
3,702
0
0
0.0
2002 Q4
6,027
0
0
0.0
2002 Q3
7,539
0
0
0.0
2002 Q2
9,039
1
0
110.6
2002 Q1
5,926
0
0
0.0
2001 Q4
7,328
0
0
0.0
2001 Q3
7,951
0
0
0.0
2001 Q2
8,152
0
0
0.0
2001 Q1
8,071
0
0
0.0
2000 Q4
8,676
0
0
0.0
2000 Q3
9,648
0
0
0.0
2000 Q2
9,582
0
0
0.0
2000 Q1
8,239
2
0
242.7
No fatalities recorded at this mine.
Reportable incidents
5 on file
1996 · 1 incident
March 13, 1996OH · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorMACHINERY
ROCK WAS WEDGED IN THE BOTTOM OF THE 310 HOPPER. WITH THE DESIGN OF HOPPER, THE ONLY WAY YOU CAN GET TO THE ROCKS IS TO CRAWL INSIDE HOPPER. THE ROCK SHIFTED AND SLIPPED OUT OF MY HANDS, SMASH ING MY FINGER BETWEEN THE ROCK AND A PIECE OF STEEL.
1992 · 1 incident
August 13, 1992OH · Metal/Non-Metalcrane operator, mobile equipment operator (meo), dragline operator, dropball operator, riggerHANDLING OF MATERIALS
38157ING OXYGEN AND ACET CYLINDERS ON THE TORCH CART. SET OXYGEN TANK FELL OVER HE TRIED TO CATCH IT AND MISSED, TOP OF TANK STRUCK HIM ON THE TOP OF THE RIGHT FOOT. WENT TO THE MEDICAL CENTER 01540HAD FOOT X-RAYED, NOTHING BROKEN, CONTUSION AND SPRAIN WAS DOCTOR REPORT.
1988 · 1 incident
October 20, 1988OH · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS
Ernst Aggregates · Caught in, under or between a moving and a stationary object
EMPLOYEE WAS LIFTING BEARING HOUSING FROM SIDE OF SCREEN. BEARING HOUSING SLIPPED PINCHING KNUCKLE BETWEEN HOUSING AND A BOLT ON SCREEN. THE EMPLOYEE RECEIVED THREE STITCHES BETWEEN RING FING ER AND LITTLE FINGER ON LEFT HAND. EMPLOYEE RETURNED TO WORK SAME DAY.
1987 · 1 incident
April 16, 1987OH · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS