Employee had a periodic screening chest x-ray read by two B-readers using the ILO procedures. The X-ray was characterized as consistent with pneumoconiosis with readings of 2/3 and 3/2. Damage or impairment cannot be determined solely by reading chest x-ray films. This report is being submitted to satisfy MSHA program policy letter P92-III-2.
North Troy: 122 MSHA citations Metal/Non-Metal
North Troy has $20K in proposed MSHA penalties and $0 outstanding across 5 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 23
- Years on record
- 2005–2025
- Latest incident
- Jan 2025
ⓘ
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.North Troy has $20K in proposed MSHA penalties and $0 outstanding across 5 contested dockets.
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.ⓘ
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.ⓘ
Contesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.- Settled 6 · 86%
- Vacated or withdrawn 1 · 14%
ⓘ
Counts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.ⓘ
A reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.| Docket | Decision | Judge | Year | Proposed / upheld |
|---|---|---|---|---|
| CENT 2016-0377 | Prevail | Manning | 2017 | $873 → $250 |
| CENT 2019-0297 | Settlement | Bulluck | 2019 | $636 → $196 |
| CENT 2010-151M | Settlement | Paez | 2012 | $540 → $540 |
| CENT 2016-0401 | Settlement | Lesnick | 2016 | $448 → $324 |
| CENT 2014-0376 | Settlement | Miller | 2014 | $224 → $100 |
ⓘ
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: 2026-07-29
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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.- Quartz, respirable, >1% Qtz16
- Respirable dust, <.1mg11
- Arsenic fumes1
- Beryllium fumes1
Show the individual readings (42)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2026-07-29 | Respirable dust, <.1mg | 0 | Crusher Oper/Worker | ||
| 2026-07-29 | Quartz, respirable, >1% Qtz | 0.19 | Utility Man | ||
| 2026-07-29 | Respirable dust, <.1mg | 0 | Truck Driver | ||
| 2026-07-29 | Quartz, respirable, >1% Qtz | 0.32 | 1.22 | 0.26 | Utility Man |
| 2023-06-07 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2023-06-07 | Respirable dust, <.1mg | 0 | Truck Driver | ||
| 2023-06-07 | Quartz, respirable, >1% Qtz | 0.2 | Crusher Oper/Worker | ||
| 2023-06-07 | Quartz, respirable, >1% Qtz | 0.63 | 1.75 | 0.36 | Laborer, Bullgang |
| 2020-10-21 | Quartz, respirable, >1% Qtz | 0.59 | 1.28 | 0.46 | Laborer, Bullgang |
| 2020-10-21 | Quartz, respirable, >1% Qtz | 0.25 | Laborer, Bullgang | ||
| 2020-10-21 | Respirable dust, <.1mg | 0 | Rotary Bucket Ex. Operator | ||
| 2017-05-10 | Respirable dust, <.1mg | 0 | Laborer, Bullgang | ||
| 2017-05-10 | Quartz, respirable, >1% Qtz | 0.52 | 1.23 | 0.42 | Laborer, Bullgang |
| 2017-05-10 | Quartz, respirable, >1% Qtz | 0.25 | 1.15 | 0.22 | Laborer, Bullgang |
| 2017-05-10 | Respirable dust, <.1mg | 0 | Truck Driver | ||
| 2016-07-20 | Quartz, respirable, >1% Qtz | 0.3 | 2.5 | 0.12 | Laborer, Bullgang |
| 2016-07-20 | Respirable dust, <.1mg | 0 | Truck Driver | ||
| 2016-07-20 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2016-07-20 | Quartz, respirable, >1% Qtz | 0.15 | 1.67 | 0.09 | Crusher Oper/Worker |
| 2016-07-20 | Quartz, respirable, >1% Qtz | 0.52 | 0.95 | 0.55 | Laborer, Bullgang |
| 2013-09-11 | Quartz, respirable, >1% Qtz | 0.5 | 1.05 | 0.48 | Laborer, Bullgang |
| 2013-09-11 | Respirable dust, <.1mg | 0 | Truck Driver | ||
| 2013-09-11 | Respirable dust, <.1mg | 0 | Crusher Oper/Worker | ||
| 2013-09-11 | Unlisted Particulate, respirable, <1% Qtz | 1.41 | Laborer, Bullgang | ||
| 2013-09-11 | Quartz, respirable, >1% Qtz | 0.19 | 0.86 | 0.22 | Laborer, Bullgang |
| 2010-03-30 | Arsenic fumes | 0 | 1500 | 0.00 | Pipe Fitter/Millright/Plumber |
| 2010-03-30 | Zinc oxide fumes | 0 | 10 | 0.00 | Pipe Fitter/Millright/Plumber |
| 2010-03-30 | Vanadium fumes | 0 | 50 | 0.00 | Pipe Fitter/Millright/Plumber |
| 2010-03-30 | Nickel fumes | 0 | 3 | 0.00 | Pipe Fitter/Millright/Plumber |
| 2010-03-30 | Molybdenum fumes | 0 | 20 | 0.00 | Pipe Fitter/Millright/Plumber |
| 2010-03-30 | Manganese fumes | 0 | 5 | 0.00 | Pipe Fitter/Millright/Plumber |
| 2010-03-30 | Magnesium oxide fumes | 0 | 20 | 0.00 | Pipe Fitter/Millright/Plumber |
| 2010-03-30 | Lead fumes | 0 | 450 | 0.00 | Pipe Fitter/Millright/Plumber |
| 2010-03-30 | Iron oxide fumes | 0 | 20 | 0.00 | Pipe Fitter/Millright/Plumber |
| 2010-03-30 | Copper fumes | 0 | 300 | 0.00 | Pipe Fitter/Millright/Plumber |
| 2010-03-30 | Cobalt fumes | 0 | 300 | 0.00 | Pipe Fitter/Millright/Plumber |
| 2010-03-30 | Chromium, insoluble | 0 | 3 | 0.00 | Pipe Fitter/Millright/Plumber |
| 2010-03-30 | Cadmium oxide fumes | 0 | 100 | 0.00 | Pipe Fitter/Millright/Plumber |
| 2010-03-30 | Beryllium fumes | 0 | 6 | 0.00 | Pipe Fitter/Millright/Plumber |
| 2008-05-06 | Quartz, respirable, >1% Qtz | 0.15 | 1.18 | 0.13 | Drill Operator, Rotary |
| 2008-05-06 | Quartz, respirable, >1% Qtz | 0.19 | 1.75 | 0.11 | Drill Operator, Rotary |
| 2008-05-06 | Quartz, respirable, >1% Qtz | 0.23 | 1.14 | 0.20 | Crusher Oper/Worker |
North Troy recorded 0.00 reportable injury cases per 100 full-time workers in 2025.
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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.| Year | total case rate | days-away | fatal |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 0.000 |
| 2024 | 1.50 | 0.00 | 0.000 |
| 2023 | 1.68 | 1.68 | 0.000 |
| 2022 | 1.75 | 1.75 | 0.000 |
| 2021 | 0.00 | 0.00 | 0.000 |
| 2020 | 1.83 | 0.00 | 0.000 |
| 2019 | 0.00 | 0.00 | 0.000 |
| 2018 * | 4.02 | 0.00 | 0.000 |
- Meridian Aggregates Company 2003 to 2005
- Martin Marietta Materials, Inc. 2005 to 2014
- Vulcan Construction Materials, LLC 2014 to present
| Year | Employees |
|---|---|
| 2026 | 64 |
| 2025 | 59 |
| 2024 | 55 |
| 2023 | 48 |
| 2022 | 47 |
| 2021 | 43 |
| 2020 | 43 |
| 2019 | 41 |
| 2018 | 40 |
| 2017 | 37 |
| 2016 | 38 |
| 2015 | 37 |
| 2014 | 23 |
| 2013 | 19 |
| 2012 | 15 |
| 2011 | 15 |
| 2010 | 16 |
| 2009 | 23 |
| 2008 | 44 |
| 2007 | 50 |
| 2006 | 48 |
| 2005 | 3 |
North Troy sits in Johnston County, Oklahoma, where the Census mining category is 5.7% of county employment.
ⓘ
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.ⓘ
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.| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2026 Q2 | 39,845 | 0 | 0 | 0.0 |
| 2026 Q1 | 36,444 | 0 | 0 | 0.0 |
| 2025 Q4 | 39,543 | 6 | 2 | 151.7 |
| 2025 Q3 | 36,865 | 0 | 0 | 0.0 |
| 2025 Q2 | 35,095 | 0 | 0 | 0.0 |
| 2025 Q1 | 29,052 | 0 | 0 | 0.0 |
| 2024 Q4 | 30,783 | 0 | 0 | 0.0 |
| 2024 Q3 | 37,016 | 0 | 0 | 0.0 |
Show 77 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q2 | 32,518 | 0 | 0 | 0.0 |
| 2024 Q1 | 32,615 | 2 | 0 | 61.3 |
| 2023 Q4 | 28,033 | 0 | 0 | 0.0 |
| 2023 Q3 | 31,511 | 0 | 0 | 0.0 |
| 2023 Q2 | 29,818 | 0 | 0 | 0.0 |
| 2023 Q1 | 29,557 | 0 | 0 | 0.0 |
| 2022 Q4 | 28,062 | 0 | 0 | 0.0 |
| 2022 Q3 | 29,538 | 0 | 0 | 0.0 |
| 2022 Q2 | 30,639 | 0 | 0 | 0.0 |
| 2022 Q1 | 26,363 | 0 | 0 | 0.0 |
| 2021 Q4 | 26,245 | 1 | 1 | 38.1 |
| 2021 Q3 | 28,160 | 0 | 0 | 0.0 |
| 2021 Q2 | 25,997 | 1 | 0 | 38.5 |
| 2021 Q1 | 23,399 | 0 | 0 | 0.0 |
| 2020 Q4 | 24,474 | 2 | 0 | 81.7 |
| 2020 Q3 | 30,201 | 0 | 0 | 0.0 |
| 2020 Q2 | 28,080 | 0 | 0 | 0.0 |
| 2020 Q1 | 26,827 | 1 | 1 | 37.3 |
| 2019 Q4 | 25,692 | 1 | 0 | 38.9 |
| 2019 Q3 | 25,293 | 0 | 0 | 0.0 |
| 2019 Q2 | 25,590 | 5 | 1 | 195.4 |
| 2019 Q1 | 25,487 | 1 | 0 | 39.2 |
| 2018 Q4 | 24,707 | 0 | 0 | 0.0 |
| 2018 Q3 | 26,048 | 0 | 0 | 0.0 |
| 2018 Q2 | 25,298 | 2 | 1 | 79.1 |
| 2018 Q1 | 23,400 | 2 | 2 | 85.5 |
| 2017 Q4 | 21,522 | 0 | 0 | 0.0 |
| 2017 Q3 | 23,445 | 0 | 0 | 0.0 |
| 2017 Q2 | 22,306 | 1 | 1 | 44.8 |
| 2017 Q1 | 21,322 | 3 | 0 | 140.7 |
| 2016 Q4 | 21,941 | 0 | 0 | 0.0 |
| 2016 Q3 | 24,751 | 5 | 0 | 202.0 |
| 2016 Q2 | 22,980 | 0 | 0 | 0.0 |
| 2016 Q1 | 25,465 | 3 | 1 | 117.8 |
| 2015 Q4 | 25,433 | 0 | 0 | 0.0 |
| 2015 Q3 | 26,972 | 0 | 0 | 0.0 |
| 2015 Q2 | 23,080 | 2 | 1 | 86.7 |
| 2015 Q1 | 20,914 | 2 | 0 | 95.6 |
| 2014 Q4 | 18,274 | 0 | 0 | 0.0 |
| 2014 Q3 | 15,945 | 0 | 0 | 0.0 |
| 2014 Q2 | 17,861 | 1 | 1 | 56.0 |
| 2014 Q1 | 16,191 | 6 | 1 | 370.6 |
| 2013 Q4 | 15,523 | 0 | 0 | 0.0 |
| 2013 Q3 | 15,516 | 1 | 0 | 64.4 |
| 2013 Q2 | 13,176 | 0 | 0 | 0.0 |
| 2013 Q1 | 12,120 | 3 | 2 | 247.5 |
| 2012 Q4 | 8,503 | 0 | 0 | 0.0 |
| 2012 Q3 | 8,484 | 0 | 0 | 0.0 |
| 2012 Q2 | 9,406 | 0 | 0 | 0.0 |
| 2012 Q1 | 8,118 | 5 | 0 | 615.9 |
| 2011 Q4 | 8,907 | 0 | 0 | 0.0 |
| 2011 Q3 | 10,745 | 0 | 0 | 0.0 |
| 2011 Q2 | 9,811 | 0 | 0 | 0.0 |
| 2011 Q1 | 6,478 | 0 | 0 | 0.0 |
| 2010 Q4 | 9,404 | 0 | 0 | 0.0 |
| 2010 Q3 | 8,502 | 1 | 0 | 117.6 |
| 2010 Q2 | 9,511 | 0 | 0 | 0.0 |
| 2010 Q1 | 9,188 | 7 | 1 | 761.9 |
| 2009 Q4 | 10,627 | 0 | 0 | 0.0 |
| 2009 Q3 | 16,621 | 0 | 0 | 0.0 |
| 2009 Q2 | 16,416 | 0 | 0 | 0.0 |
| 2009 Q1 | 15,538 | 0 | 0 | 0.0 |
| 2008 Q4 | 27,339 | 6 | 3 | 219.5 |
| 2008 Q3 | 21,418 | 0 | 0 | 0.0 |
| 2008 Q2 | 25,453 | 3 | 0 | 117.9 |
| 2008 Q1 | 31,476 | 1 | 0 | 31.8 |
| 2007 Q4 | 31,922 | 0 | 0 | 0.0 |
| 2007 Q3 | 31,876 | 0 | 0 | 0.0 |
| 2007 Q2 | 33,048 | 2 | 0 | 60.5 |
| 2007 Q1 | 34,996 | 0 | 0 | 0.0 |
| 2006 Q4 | 35,430 | 8 | 1 | 225.8 |
| 2006 Q3 | 32,800 | 0 | 0 | 0.0 |
| 2006 Q2 | 30,329 | 0 | 0 | 0.0 |
| 2006 Q1 | 30,316 | 0 | 0 | 0.0 |
| 2005 Q4 | 2,328 | 0 | 0 | 0.0 |
| 2005 Q3 | 2,914 | 0 | 0 | 0.0 |
| 2005 Q2 | 428 | 0 | 0 | 0.0 |
Reportable incidents
23 on file2025 · 1 incident
2024 · 1 incident
On 8/13/24, employee was throwing away a 20 lb scrap pump into metal waste bin when EE felt discomfort in EE's back right side. EE used 1st aid measures to help with the discomfort for 2 weeks. When the pain did not resolve EE sought medical treatment on 8/27, were diagnosed with a back strain and issued restrictions & medications.
2023 · 1 incident
Employee was making their way to the back of a locomotive via the walkway and slipped on a step. They landed on their left knee. Later in the morning employee was still feeling discomfort and asked to go to the clinic. Employee was evaluated and referred for further evaluation and given light-duty restrictions.
2022 · 1 incident
Employee was swinging a hammer in a downward motion when the head of the hammer flew off, causing the employee to increase momentum. The sudden increase in momentum resulted in pain in the employees left shoulder.
2020 · 1 incident
Limited ability to sustain body positions.
2018 · 2 incidents
EE was changing screen in screen #5. As EE was attempting to exit the area EE set right leg to side and felt pain in knee. The pain immobilized use of right leg and EE needed assistance to vehicle. EE was escorted to ER by spouse.
Return roller fell on finger causing fracture.
2016 · 1 incident
Employee tore a ligament in EE's back while lifting a skid steer tire.
2015 · 5 incidents
EMPLOYEE FILED WORK COMP ON 11/24/2015 FOR CARPAL TUNNEL IN BOTH WRISTS. ON 6/20/2017 HE HAD SURGERY ON LEFT WRIST.
Employee lost his balance while exiting loader and fell to the ground. He sought medical attention and is currently losing time.
Employee was removing a new Hawkbill flip knife from it's plastic packaging when his hand was cut by the blade, requiring two stitches.
Employee experienced a laceration on his finger while assisting another employee with a belt replacement on a conveyor. He sought medical attention, received 4 stitches and was released to full duty.
Employee was performing maintenance on a conveyor when he felt pain in his right shoulder. After seeking medical attention on Feburary 9, 2015 the injury was determined not to be work related. On December 23, 2015 a determination was made that this injury was work related. This is being reported within 10 working days of this notification.
2014 · 2 incidents
While assembling loader tire bead band became bound. Trying to seat the band the tech struck the top portion of bead band and lower portion sprung back striking tech in the upper abdominal area.
Received results indicating employee reached the MSHA levels of silicosis.
2013 · 2 incidents
Tech was backed up to a 777C wheel to install wheel studs. The hooks were too small to properly fit in the hole to lock hold. Tech was holding the hook in place and when the load hit the hook, it slipped out and caused nail avulsion on Left Middle finger.
Climbing down ladder from top deck station #3, when knee twisted & popped. Employee was done with work on the top deck Station #3, as he went to the ladder to get down he turned sideways to get into the ladder and popped his left knee. This first aid incident did not reveal to require surgery until May.
2012 · 1 incident
DRIVING HAUL TRUCK AND HIT BUMP IN THE ROAD. HIS SEAT CAME BACK DOWN AND HIT HIS ELBOW ON THE FIXED ARM REST ATTACHED TO DOOR.
2010 · 2 incidents
Employee was changing out worn brake shoes on a company owned railcar. While using a new brake shoe to tap worn brake shoe out, felt a pop in his left shoulder and experienced pain. Immediately reported to supervisor but did not want to go to the clinic. Went to clinic on 11/08/2010 because of continued pain in left shoulder.
Employee was flipping gates to switch from 57 to 467 in Station 6. Went to flip gate over and it didn't shut all the way. Employee pulled it back to shut it the rest of the way and didn't let go of it in time resulting in his middle finger on left hand being smashed.
2007 · 1 incident
While dismounting drill rig, stepped off of ladder onto a rock which rolled causing him to roll (sprain) his ankle.
2005 · 2 incidents
A crew of 4 men were installing a belt, using a forklift and boom truck. Two employees were watching. One stationed at the tail pulley; one between the tail pulley & boom truck. The Forklift was on the opposite side of the conveyor pulling the belt. As the belt went around the pulley the employee reached in. The belt jumped and pulled his hand into the tail pulley.
EE WAS DRILLING. HE TURNED UP SETTINGS ON COMPRESSOR. APPROX 5 MIN AFTER TURNING UP THE PRESSURE, HOSE CARRYING AN AIR/OIL MIXTURE BLEW. HOSE WAS NEXT TO COOLING FAN WHICH BLEW THE MIXTURE INTO THE TURBO ON THE ENGINE & MIXTURE IGNITED. HE LOOSENED HARD HAT & RECEIVED 2ND DEG BURNS ON HIS HEAD. HE THEN PUT THE FIRE OUT W/THE EXTINGUISHER IN THE RIG. FIRE LASTED 3-4 MIN.