PROSPECT QUARRY-C646 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
2012
Latest incident
Jun 2012
Compliance record
MSHA citations since 2010
13
citations
0
significant & substantial
$1,608
proposed penalties
$1,608
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: 147 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
PROSPECT QUARRY-C646 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
13 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2013-10-30.
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.
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: 2014-12-02, 11 years ago
0%
of limit-tested samples over the exposure limit
5
samples
1
limit-tested
Most sampled contaminants
Respirable dust, <.1mg2
Unlisted Particulate, respirable, <1% Qtz2
Quartz, respirable, >1% Qtz1
Show the individual readings (5)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2014-12-02
Respirable dust, <.1mg
0
Truck Driver
2012-10-03
Respirable dust, <.1mg
0
Backhoe Operator
2012-10-03
Unlisted Particulate, respirable, <1% Qtz
0.62
Front-end Loader Operator
2012-10-03
Quartz, respirable, >1% Qtz
0.16
0.5
0.32
Supervisor, Co. Official
2012-10-03
Unlisted Particulate, respirable, <1% Qtz
0.33
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
0
2025
0
2024
1
2023
0
2022
0
2021
1
2020
1
2019
1
2018
1
2017
1
2016
2
2015
2
2014
3
2013
4
2012
3
2011
4
2010
1
Source: MSHA quarterly employment and production, updated weekly.
PROSPECT QUARRY-C646 sits in Waldo County, Maine, 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.
Waldo County, Maine · Population 40,006
0.1%
Mining share of county employment
$68,441
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
0
0
2026 Q1
0
0
0
2025 Q4
0
0
0
2025 Q3
0
0
0
2025 Q2
0
0
0
2025 Q1
0
0
0
2024 Q4
11
0
0
0.0
2024 Q3
22
0
0
0.0
Show 55 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
15
0
0
0.0
2024 Q1
0
0
0
2023 Q4
0
0
0
2023 Q3
0
0
0
2023 Q2
11
0
0
0.0
2023 Q1
0
0
0
2022 Q4
17
0
0
0.0
2022 Q3
0
0
0
2022 Q2
0
0
0
2022 Q1
0
0
0
2021 Q4
8
0
0
0.0
2021 Q3
0
0
0
2021 Q2
79
0
0
0.0
2021 Q1
8
0
0
0.0
2020 Q4
0
0
0
2020 Q3
85
0
0
0.0
2020 Q2
77
0
0
0.0
2020 Q1
10
0
0
0.0
2019 Q4
0
0
0
2019 Q3
30
0
0
0.0
2019 Q2
17
0
0
0.0
2019 Q1
11
0
0
0.0
2018 Q4
22
0
0
0.0
2018 Q3
94
0
0
0.0
2018 Q2
0
0
0
2018 Q1
40
0
0
0.0
2017 Q4
61
0
0
0.0
2017 Q3
0
0
0
2017 Q2
0
0
0
2017 Q1
27
0
0
0.0
2016 Q4
25
0
0
0.0
2016 Q3
25
0
0
0.0
2016 Q2
212
0
0
0.0
2016 Q1
48
0
0
0.0
2015 Q4
322
0
0
0.0
2015 Q3
0
0
0
2015 Q2
34
0
0
0.0
2015 Q1
80
0
0
0.0
2014 Q4
557
0
0
0.0
2014 Q3
32
0
0
0.0
2014 Q2
651
0
0
0.0
2014 Q1
16
0
0
0.0
2013 Q4
221
1
0
4524.9
2013 Q3
1,087
0
0
0.0
2013 Q2
1,390
0
0
0.0
2013 Q1
17
0
0
0.0
2012 Q4
424
0
0
0.0
2012 Q3
1,082
0
0
0.0
2012 Q2
594
0
0
0.0
2012 Q1
52
0
0
0.0
2011 Q4
556
0
0
0.0
2011 Q3
1,195
0
0
0.0
2011 Q2
780
0
0
0.0
2011 Q1
30
0
0
0.0
2010 Q4
55
5
0
90909.1
No fatalities recorded at this mine.
Reportable incidents
1 on file
2012 · 1 incident
June 9, 2012ME · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS
Pike Industries Inc · Caught in, under or between a moving and a stationary object
EE was working on the jaw crusher in Prospect. He was putting a cover from the crusher down when a bolt on the cover hit the index finger on his right hand. The EE pulled his hand back towards him in pain which caused the cover to take the skin off of his finger from the middle of the finger to the tip.