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.
146 citations across 1,021 inspection hours.
Source: MSHA inspections data, updated weekly.
LOUDON QUARRY has $20K 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.
$20K
proposed penalties
$20K
current assessed
$20K
paid to date
$0
outstanding
142 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-04-07.
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: 2023-01-11, 3 years ago
0%
of limit-tested samples over the exposure limit
16
samples
4
limit-tested
Most sampled contaminants
Respirable dust, <.1mg8
Quartz, respirable, >1% Qtz6
Unlisted Particulate, respirable, <1% Qtz2
Show the individual readings (16)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2023-01-11
Quartz, respirable, >1% Qtz
0.25
0.72
0.35
Front-end Loader Operator
2021-01-22
Quartz, respirable, >1% Qtz
0.24
Front-end Loader Operator
2021-01-22
Quartz, respirable, >1% Qtz
0.26
Front-end Loader Operator
2021-01-22
Respirable dust, <.1mg
0
Truck Driver
2017-10-18
Quartz, respirable, >1% Qtz
0.23
0.54
0.43
Crusher Oper/Worker
2017-10-18
Respirable dust, <.1mg
0
Front-end Loader Operator
2017-10-18
Respirable dust, <.1mg
0
Front-end Loader Operator
2012-06-07
Respirable dust, <.1mg
0
Front-end Loader Operator
2007-08-23
Respirable dust, <.1mg
0
Crusher Oper/Worker
2007-08-23
Quartz, respirable, >1% Qtz
0.2
1.76
0.11
Truck Driver
2007-08-23
Unlisted Particulate, respirable, <1% Qtz
0.18
Front-end Loader Operator
2004-05-12
Unlisted Particulate, respirable, <1% Qtz
0.3
Front-end Loader Operator
2004-05-12
Quartz, respirable, >1% Qtz
0.28
0.33
0.85
Backhoe Operator
2003-05-28
Respirable dust, <.1mg
0
Front-end Loader Operator
2003-05-28
Respirable dust, <.1mg
0
Crusher Oper/Worker
2003-05-28
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.
LOUDON QUARRY recorded 0.00 reportable injury cases per 100 full-time workers in 2025.
Injury rate, 2025
ⓘ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
Below average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In New Hampshire, metal and nonmetal mining averaged 2.36 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
2025 *
0.00
0.00
0.000
2024 *
0.00
0.00
0.000
2023 *
0.00
0.00
0.000
2022 *
4.54
4.54
0.000
2021 *
7.03
0.00
0.000
2020 *
0.00
0.00
0.000
2019 *
0.00
0.00
0.000
2018 *
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
23
2025
23
2024
22
2023
24
2022
22
2021
17
2020
16
2019
13
2018
12
2017
13
2016
14
2015
12
2014
9
2013
8
2012
8
2011
7
2010
7
2009
10
2008
13
2007
14
2006
16
2005
13
2004
12
2003
12
2002
12
2001
12
2000
11
Source: MSHA quarterly employment and production, updated weekly.
LOUDON QUARRY sits in Merrimack County, New Hampshire, 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.
Merrimack County, New Hampshire · Population 155,018
0.1%
Mining share of county employment
$93,944
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
10,621
0
0
0.0
2026 Q1
9,817
0
0
0.0
2025 Q4
12,992
0
0
0.0
2025 Q3
13,982
0
0
0.0
2025 Q2
12,353
6
1
485.7
2025 Q1
7,930
0
0
0.0
2024 Q4
11,000
2
0
181.8
2024 Q3
11,021
5
0
453.7
Show 98 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
12,177
0
0
0.0
2024 Q1
12,283
3
1
244.2
2023 Q4
12,434
0
0
0.0
2023 Q3
11,995
0
0
0.0
2023 Q2
14,063
1
0
71.1
2023 Q1
12,595
1
0
79.4
2022 Q4
12,566
0
0
0.0
2022 Q3
11,441
0
0
0.0
2022 Q2
10,828
3
1
277.1
2022 Q1
9,241
2
2
216.4
2021 Q4
3,214
0
0
0.0
2021 Q3
9,731
0
0
0.0
2021 Q2
7,986
4
2
500.9
2021 Q1
7,535
0
0
0.0
2020 Q4
7,832
0
0
0.0
2020 Q3
8,612
2
0
232.2
2020 Q2
6,060
0
0
0.0
2020 Q1
4,696
0
0
0.0
2019 Q4
6,784
1
0
147.4
2019 Q3
7,570
2
1
264.2
2019 Q2
7,372
0
0
0.0
2019 Q1
5,047
3
2
594.4
2018 Q4
7,274
0
0
0.0
2018 Q3
7,955
0
0
0.0
2018 Q2
6,724
0
0
0.0
2018 Q1
3,598
0
0
0.0
2017 Q4
6,370
3
0
471.0
2017 Q3
6,631
0
0
0.0
2017 Q2
7,509
0
0
0.0
2017 Q1
5,071
2
0
394.4
2016 Q4
7,839
0
0
0.0
2016 Q3
6,324
15
5
2371.9
2016 Q2
5,720
0
0
0.0
2016 Q1
2,768
0
0
0.0
2015 Q4
6,238
0
0
0.0
2015 Q3
6,474
7
3
1081.2
2015 Q2
3,844
2
0
520.3
2015 Q1
3,030
0
0
0.0
2014 Q4
5,025
7
2
1393.0
2014 Q3
5,066
0
0
0.0
2014 Q2
5,790
0
0
0.0
2014 Q1
1,636
3
0
1833.7
2013 Q4
2,499
1
0
400.2
2013 Q3
3,604
0
0
0.0
2013 Q2
4,643
13
1
2799.9
2013 Q1
2,877
0
0
0.0
2012 Q4
3,890
0
0
0.0
2012 Q3
4,525
0
0
0.0
2012 Q2
2,812
2
0
711.2
2012 Q1
1,062
0
0
0.0
2011 Q4
2,894
6
0
2073.3
2011 Q3
3,412
0
0
0.0
2011 Q2
2,371
13
5
5482.9
2011 Q1
1,959
0
0
0.0
2010 Q4
3,319
0
0
0.0
2010 Q3
3,696
4
1
1082.3
2010 Q2
2,915
0
0
0.0
2010 Q1
2,802
0
0
0.0
2009 Q4
5,249
0
0
0.0
2009 Q3
5,049
0
0
0.0
2009 Q2
3,383
0
0
0.0
2009 Q1
2,943
0
0
0.0
2008 Q4
5,893
0
0
0.0
2008 Q3
6,696
1
0
149.3
2008 Q2
6,673
3
0
449.6
2008 Q1
5,319
0
0
0.0
2007 Q4
6,904
0
0
0.0
2007 Q3
6,790
0
0
0.0
2007 Q2
6,570
0
0
0.0
2007 Q1
4,402
6
0
1363.0
2006 Q4
6,884
0
0
0.0
2006 Q3
7,902
0
0
0.0
2006 Q2
7,880
4
1
507.6
2006 Q1
5,950
0
0
0.0
2005 Q4
6,425
0
0
0.0
2005 Q3
7,057
0
0
0.0
2005 Q2
5,444
0
0
0.0
2005 Q1
3,846
2
0
520.0
2004 Q4
5,452
0
0
0.0
2004 Q3
7,651
0
0
0.0
2004 Q2
5,860
7
3
1194.5
2004 Q1
2,877
0
0
0.0
2003 Q4
5,602
0
0
0.0
2003 Q3
5,962
0
0
0.0
2003 Q2
5,566
3
0
539.0
2003 Q1
4,368
0
0
0.0
2002 Q4
6,765
0
0
0.0
2002 Q3
6,665
0
0
0.0
2002 Q2
5,828
0
0
0.0
2002 Q1
3,035
0
0
0.0
2001 Q4
6,143
2
0
325.6
2001 Q3
6,489
0
0
0.0
2001 Q2
5,181
0
0
0.0
2001 Q1
3,230
0
0
0.0
2000 Q4
5,209
0
0
0.0
2000 Q3
5,112
0
0
0.0
2000 Q2
4,433
0
0
0.0
2000 Q1
3,613
0
0
0.0
Fatalities at this mine
1 recorded
June 12, 2015NH · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techFatality · STRIKING OR BUMPING
Technician found unconscious and transported to hospital where he died the following day. He had reported bumping his head earlier that same day but never filed an injury report.
Reportable incidents
17 on file (excluding fatalities above)
2022 · 1 incident
February 14, 2022NH · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerMACHINERY
Operator working next to open hole about 4 feet deep building berm. Machine on iced roadway working parallel to hole without berm protection when movement of boom caused machine to slide into hole onto its side. Cab damage and operator had cut hands with no stitching required. Minor concussion. Released from ER within 4 hours
2021 · 1 incident
April 5, 2021NH · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
Employee was trying to rotate the cone by pulling the belts by hand. As the belts rotated the employee right pinky finger entered the pinch point between the outer belt and the shiv grooves. The plant was properly locked out at the time of the incident. The employee received 3 stiches to the finger as a result of the incident.
2011 · 2 incidents
November 8, 2011NH · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techSLIP OR FALL OF PERSON
EMPLOYEE WAS TAKING TRASH TO DUMPSTER, STEPPED ON SNOW COVERED ICE & FELL TO THE GROUND, PULLING LIGAMENTE IN HIS RIGHT ANKLE & BREAKING HIS RITHT LEG. I PERSON INVOLVED.
1992 · 1 incident
September 30, 1992NH · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
I,NAME WAS TIGHTENING A BOLT ON THE SCREEN PLANT WHEN THE WRENCH SLIPPED AND HE HIT HIS RIGHT ELBOW ON THE CATWALK SAFETY RAIL.
October 21, 1985NH · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON
I.NAME WAS REPAIRING A SCREEN ON THE SCREEN PLANT HE WENT TO GET A WRENCH WHEN HE SLIPPED AND FELL ON THE CATWALK HE CUT HIS LEFT BUTTOCKS ON THE CORNER OF THE LADDER AND CATWALK
September 5, 1985NH · Metal/Non-Metalmine manager, mine foreman, mine ownerHANDLING OF MATERIALS
EMPL ASST ANOTHER EMPL FREE JAMMED ROCK IN JAWS OF CRUSHER WHEN ROCK CAME FREE AND RELEASED CROWBAR CRUSHING EMPL LEFT HAND BETWEEN CROWBAR AND CRUSHER SIDE.
April 29, 1985NH · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDTOOLS (NONPOWERED)