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Mason Quarry: 20 MSHA citations Metal/Non-Metal

Controlled by Donald Conte
Mason, Hillsborough County, NH  ·  Intermittent
MSHA Mine ID: 2700151

Mason Quarry has had no fatalities among 5 reportable incidents since 1986. MSHA has proposed $2K in penalties since 2001.

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Fatalities
0
Total incidents
5
Years on record
1986–1989
Latest incident
Jun 1989
Compliance record
MSHA citations since 2001
20
citations
2
significant & substantial
$1,940
proposed penalties
$1,940
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Georgia Stone Management LLC's full MSHA compliance history →
Inspection activity
MSHA inspections since 2001
20
inspections on record
237
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: 237 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Mason Quarry 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
19 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-08-26.
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.
10.5%
significant & substantial
10.5%
high negligence or reckless
10.5%
reasonably likely or greater
63.2%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 10.5% low, 78.9% moderate, 10.5% high, 0.0% reckless.
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: 2011-08-16, 15 years ago
0%
of limit-tested samples over the exposure limit
7
samples
3
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg4
  • Quartz, respirable, >1% Qtz3
Show the individual readings (7)
Date Contaminant Concentration Limit Conc / limit Occupation
2011-08-16 Respirable dust, <.1mg 0 Laborer, Bullgang
2011-08-16 Respirable dust, <.1mg 0 Laborer, Bullgang
2011-08-16 Respirable dust, <.1mg 0 Laborer, Bullgang
2011-08-16 Respirable dust, <.1mg 0 Mobile Crane Operator
2006-03-15 Quartz, respirable, >1% Qtz 0.56 1.75 0.32 Drill Operator, Rotary
2006-03-15 Quartz, respirable, >1% Qtz 0.35 1.53 0.23 Drill Helper
2006-03-15 Quartz, respirable, >1% Qtz 0.14 0.75 0.19 Mobile Crane 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.
Ownership history
  1. Maine & New Hampshire Granite Corp 1950 to 1985
  2. Fletcher Granite Company Inc 1985 to 1989
  3. Fletcher Granite Company Inc 1989 to 1999
  4. Fletcher Granite Company LLC 1999 to 2010
  5. Georgia Stone Industries, Inc. 2010 to 2024
  6. Georgia Stone Management LLC 2024 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2025 4
2024 2
2023 2
2022 1
2021 1
2020 4
2019 2
2018 2
2017 1
2016 2
2015 1
2014 1
2013 2
2012 2
2011 4
2010 0
2009 2
2008 2
2007 2
2006 5
2005 6
2004 6
2003 7
2002 6
2001 6
2000 6
1999 6
1998 6
1997 3
1996 5
1995 4
1994 3
1993 5
1992 3
1991 3
1990 1
1989 14
1988 15
1987 13
1986 14
1985 18
1984 19
1983 18
Source: MSHA quarterly employment and production, updated weekly; years before 2000 come from MSHA's archived Part 50 employment files.

Mason Quarry sits in Hillsborough County, New Hampshire, where the Census mining category is 0.0% 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.
Hillsborough County, New Hampshire · Population 424,732
0.0%
Mining share of county employment
$100,436
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; earlier incidents are counted but not rate-adjusted, though reported hours reach back to 1983. 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
2025 Q4 976 0 0 0.0
2025 Q3 1,615 2 0 1238.4
2025 Q2 470 0 0 0.0
2024 Q2 10 0 0 0.0
2023 Q4 5 0 0 0.0
2023 Q3 160 0 0 0.0
2023 Q2 10 0 0 0.0
2022 Q4 4 0 0 0.0
Show 83 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2022 Q3 5 0 0 0.0
2022 Q2 15 0 0 0.0
2022 Q1 5 0 0 0.0
2021 Q4 5 0 0 0.0
2021 Q3 5 0 0 0.0
2021 Q2 2 0 0 0.0
2021 Q1 2 0 0 0.0
2020 Q4 2 0 0 0.0
2020 Q3 1,950 0 0 0.0
2020 Q2 690 0 0 0.0
2020 Q1 3,200 3 0 937.5
2019 Q4 8 0 0 0.0
2019 Q3 16 0 0 0.0
2019 Q2 24 0 0 0.0
2019 Q1 18 0 0 0.0
2018 Q4 30 0 0 0.0
2018 Q3 50 0 0 0.0
2018 Q2 12 0 0 0.0
2018 Q1 3 0 0 0.0
2017 Q4 20 0 0 0.0
2017 Q3 3 0 0 0.0
2017 Q2 0 0 0
2017 Q1 0 0 0
2016 Q4 0 0 0
2016 Q3 1,219 0 0 0.0
2016 Q2 1,220 0 0 0.0
2016 Q1 0 0 0
2015 Q4 0 0 0
2015 Q3 9 0 0 0.0
2015 Q2 1 0 0 0.0
2015 Q1 1 0 0 0.0
2014 Q4 60 0 0 0.0
2014 Q3 31 0 0 0.0
2014 Q2 0 0 0
2014 Q1 0 0 0
2013 Q4 0 0 0
2013 Q3 0 0 0
2013 Q2 1,189 0 0 0.0
2013 Q1 2,131 0 0 0.0
2012 Q4 1,462 0 0 0.0
2012 Q3 0 2 0
2011 Q4 1,140 0 0 0.0
2011 Q3 1,505 2 1 1328.9
2010 Q3 0 0 0
2010 Q1 0 0 0
2009 Q4 2,273 1 0 439.9
2009 Q1 0 0 0
2008 Q4 0 0 0
2008 Q3 0 0 0
2008 Q2 32 0 0 0.0
2008 Q1 900 1 0 1111.1
2007 Q4 1,523 0 0 0.0
2007 Q3 0 0 0
2007 Q2 0 0 0
2007 Q1 318 0 0 0.0
2006 Q4 458 0 0 0.0
2006 Q3 2,250 0 0 0.0
2006 Q2 2,974 0 0 0.0
2006 Q1 2,540 2 0 787.4
2005 Q4 2,621 0 0 0.0
2005 Q3 0 0 0
2005 Q2 2,701 1 1 370.2
2005 Q1 2,642 0 0 0.0
2004 Q4 629 0 0 0.0
2004 Q3 1,024 0 0 0.0
2004 Q2 2,990 0 0 0.0
2004 Q1 2,822 0 0 0.0
2003 Q4 3,252 2 0 615.0
2003 Q3 3,528 0 0 0.0
2003 Q2 3,483 0 0 0.0
2003 Q1 3,457 0 0 0.0
2002 Q4 1,296 0 0 0.0
2002 Q3 888 0 0 0.0
2002 Q2 1,283 0 0 0.0
2002 Q1 3,272 0 0 0.0
2001 Q4 3,564 4 0 1122.3
2001 Q3 946 0 0 0.0
2001 Q2 3,280 0 0 0.0
2001 Q1 2,948 0 0 0.0
2000 Q4 2,593 0 0 0.0
2000 Q3 1,920 0 0 0.0
2000 Q2 2,331 0 0 0.0
2000 Q1 3,375 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

5 on file

1989 · 1 incident

June 9, 1989 NH · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Fletcher Granite Company Inc · Caught in, under or between (Not Elsewhere Classified)

THE INJURED PINCHED HIS THUMB IN THE STIFF LEG OF THE WIRE SAW OUTRIGGER.

1986 · 4 incidents

March 29, 1986 NH · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Fletcher Granite Company Inc · Struck by falling object

MECHANIC WAS DO3NG ROUTINE SERVICE ON CRANE WAS UNDERNEATH CRANE LOOKED UP GOT DIRT IN EYE.

March 17, 1986 NH · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman DISORDERS (REPEATED TRAUMA)
Fletcher Granite Company Inc · Over-exertion (Not Elsewhere Classified)

BECAUSE OF FREQ6ENT USE OF PNEUMATIC HAND DRILL

March 4, 1986 NH · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
Fletcher Granite Company Inc · Fall to the walkway or working surface

WORKER WAS SPLI7TING STONE FROM WORK BOX,SWING SLEDGE MISSED WEDGE LOST HIS STANCE STEP DOWN FIRMLY TO REGAIN POSTURE & TWISTED FOOT.

February 26, 1986 NH · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Fletcher Granite Company Inc · Struck against stationary object

MECHANIC WORKIN1 UNDER VECHILE BANGED HEAD ON PROJECTING BOLT. REQUIRED SUSTURES.