MSHA record for Portable Crusher C621 (mine ID 1700443). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.
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Fatalities
0
Total incidents
1
Years on record
1992
Latest incident
Apr 1992
Inspection activity
MSHA inspections since 2001
9
inspections on record
92
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: 92 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, 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: 2004-06-30, 22 years ago
4
samples
0
limit-tested
Most sampled contaminants
Respirable dust, <.1mg4
Show the individual readings (4)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2004-06-30
Respirable dust, <.1mg
0
Utility Man
2004-06-30
Respirable dust, <.1mg
0
Front-end Loader Operator
2004-06-30
Respirable dust, <.1mg
0
Supervisor, Co. Official
2004-06-30
Respirable dust, <.1mg
0
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
2007
0
2006
5
2005
5
2004
6
2003
5
2002
7
2001
7
2000
4
Source: MSHA quarterly employment and production, updated weekly.
Portable Crusher C621 sits in Somerset 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.
Somerset County, Maine · Population 50,852
0.1%
Mining share of county employment
$56,199
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
2007 Q3
0
0
0
2007 Q2
0
0
0
2007 Q1
0
0
0
2006 Q4
2,558
0
0
0.0
2006 Q3
3,786
0
0
0.0
2006 Q2
5,321
0
0
0.0
2006 Q1
669
0
0
0.0
2005 Q4
2,737
0
0
0.0
Show 23 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2005 Q3
5,892
0
0
0.0
2005 Q2
3,888
0
0
0.0
2005 Q1
0
0
0
2004 Q4
3,731
0
0
0.0
2004 Q3
2,560
0
0
0.0
2004 Q2
2,161
0
0
0.0
2004 Q1
0
0
0
2003 Q4
244
0
0
0.0
2003 Q3
2,571
0
0
0.0
2003 Q2
2,774
0
0
0.0
2003 Q1
1,341
0
0
0.0
2002 Q4
2,018
0
0
0.0
2002 Q3
4,006
0
0
0.0
2002 Q2
4,198
0
0
0.0
2002 Q1
537
0
0
0.0
2001 Q4
3,505
0
0
0.0
2001 Q3
3,908
0
0
0.0
2001 Q2
718
0
0
0.0
2001 Q1
24
0
0
0.0
2000 Q4
358
0
0
0.0
2000 Q3
154
0
0
0.0
2000 Q2
223
0
0
0.0
2000 Q1
295
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
1 on file
1992 · 1 incident
April 20, 1992ME · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorMACHINERY