Mining Incidents

Subtropolis Metal/Non-Metal

Subtropolis Mining Co. · Underground
Controlled by W Thomas Mackall
Petersburg, Mahoning County, OH  ·  Active
MSHA Mine ID: 3304547

Subtropolis has $294K in proposed MSHA penalties and $0 outstanding across 11 contested dockets, plus health sampling and the full incident record.

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Fatalities
1
Total incidents
29
Years on record
2005–2025
Latest incident
Mar 2025
Compliance record
MSHA citations since 2005
532
citations
113
significant & substantial
$293,741
proposed penalties
$166,226
paid to date
57% of proposed penalties paid to date, a $127,515 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2005
136
inspections on record
5,014
inspection hours
10.6
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.
532 citations across 5,014 inspection hours.
Source: MSHA inspections data, updated weekly.

Subtropolis has $294K in proposed MSHA penalties and $0 outstanding across 11 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.
$294K
proposed penalties
$166K
current assessed
$166K
paid to date
$0
outstanding
527 assessments are final orders; 11 contested dockets.
As of the most recent assessment on 2026-04-16.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
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
2025 Q4 24,745 4 0 161.6
2025 Q3 24,634 4 1 162.4
2025 Q2 21,622 7 0 323.7
2025 Q1 24,569 2 0 81.4
2024 Q4 21,711 7 0 322.4
2024 Q3 26,226 5 0 190.7
2024 Q2 22,919 1 0 43.6
2024 Q1 25,104 4 0 159.3
Show 74 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 23,024 4 0 173.7
2023 Q3 24,879 2 0 80.4
2023 Q2 21,098 6 0 284.4
2023 Q1 21,634 7 0 323.6
2022 Q4 21,259 6 0 282.2
2022 Q3 23,472 6 1 255.6
2022 Q2 21,977 7 1 318.5
2022 Q1 23,459 1 0 42.6
2021 Q4 22,370 4 0 178.8
2021 Q3 22,033 4 1 181.5
2021 Q2 25,633 6 0 234.1
2021 Q1 23,446 4 1 170.6
2020 Q4 24,061 4 0 166.2
2020 Q3 19,007 4 0 210.4
2020 Q2 20,615 6 1 291.1
2020 Q1 18,952 6 0 316.6
2019 Q4 23,820 8 2 335.9
2019 Q3 20,207 6 0 296.9
2019 Q2 23,885 0 0 0.0
2019 Q1 18,810 6 2 319.0
2018 Q4 23,310 10 2 429.0
2018 Q3 20,355 8 3 393.0
2018 Q2 23,580 8 1 339.3
2018 Q1 19,058 18 4 944.5
2017 Q4 23,357 3 2 128.4
2017 Q3 21,627 2 0 92.5
2017 Q2 26,524 5 1 188.5
2017 Q1 23,499 3 1 127.7
2016 Q4 30,195 7 3 231.8
2016 Q3 26,627 21 3 788.7
2016 Q2 32,517 14 9 430.5
2016 Q1 24,987 11 4 440.2
2015 Q4 25,118 8 0 318.5
2015 Q3 25,189 8 4 317.6
2015 Q2 24,088 8 2 332.1
2015 Q1 22,099 5 0 226.3
2014 Q4 22,099 9 2 407.3
2014 Q3 21,035 9 1 427.9
2014 Q2 21,541 5 2 232.1
2014 Q1 18,631 6 1 322.0
2013 Q4 16,182 0 0 0.0
2013 Q3 16,775 1 0 59.6
2013 Q2 16,143 8 2 495.6
2013 Q1 18,127 0 0 0.0
2012 Q4 17,831 4 1 224.3
2012 Q3 20,283 9 1 443.7
2012 Q2 17,820 6 1 336.7
2012 Q1 19,294 11 0 570.1
2011 Q4 15,578 7 0 449.4
2011 Q3 18,974 6 0 316.2
2011 Q2 16,308 75 16 4599.0
2011 Q1 17,265 4 2 231.7
2010 Q4 16,369 14 8 855.3
2010 Q3 17,253 7 1 405.7
2010 Q2 17,960 2 0 111.4
2010 Q1 17,616 6 4 340.6
2009 Q4 19,122 9 4 470.7
2009 Q3 20,227 8 4 395.5
2009 Q2 14,039 7 4 498.6
2009 Q1 16,433 2 0 121.7
2008 Q4 15,899 6 0 377.4
2008 Q3 18,699 4 0 213.9
2008 Q2 16,021 5 1 312.1
2008 Q1 14,274 10 4 700.6
2007 Q4 11,763 4 1 340.0
2007 Q3 15,012 5 1 333.1
2007 Q2 12,160 3 2 246.7
2007 Q1 6,174 1 0 162.0
2006 Q4 4,491 1 0 222.7
2006 Q3 4,004 0 0 0.0
2006 Q2 3,940 3 0 761.4
2006 Q1 2,545 0 0 0.0
2005 Q4 1,996 0 0 0.0
2005 Q3 1,705 1 1 586.5

Fatalities at this mine

1 recorded
April 25, 2011 OH · Metal/Non-Metal roof bolter, rock bolter, pinner, mobile roof support operator (mrs) Fatality · FALL OF ROOF OR BACK
Subtropolis Mining Co. · Struck by falling object

An employee was struck by a slab of rock that measured approximately 8 inches to 12 inches thick by 50 to 70 inches wide by 74 inches long. The roof fall occurred at the 34 Main between crosscut 1 North 4 and 1 North 5.

Reportable incidents

28 on file (excluding fatalities above)

2025 · 1 incident

March 3, 2025 OH · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Subtropolis Mining Co. · Fall to the walkway or working surface

Tripped while replacing Rollers on plant

2024 · 1 incident

February 6, 2024 OH · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor MACHINERY
Subtropolis Mining Co. · Caught in, under or between a moving and a stationary object

Changing bearing on screw/auger style washer. Auger was supported with crane. Bearing needed wedged free from auger. When bearing came loose, auger shifted pressing on left foot between auger and side wall of wash tub.

2020 · 2 incidents

December 7, 2020 OH · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Subtropolis Mining Co. · Over-exertion (Not Elsewhere Classified)

Due to cooler weather, plant having problems with belts, pulleys and material freezing up. Conveyor belt started tracking hard to south side. EE was looking at tail pulley for material build up and slipped, twisting EE's ankle.

2019 · 1 incident

June 18, 2019 OH · Metal/Non-Metal miner, nec FALL OF ROOF OR BACK
Subtropolis Mining Co. · Struck by falling object

Employee was starting to run a bolt into the roof and a rock fell and hit their head. Employee has a laceration on the left side of the head from the rock pushing their mask into the side of their head

2018 · 3 incidents

August 28, 2018 OH · Metal/Non-Metal miner, nec OTHER
Subtropolis Mining Co. · Struck by flying object

Co-workers just completed drilling holes in angle iron. Employee blew away metal shavings with their breath. Shaving went in their eye. Employee did have safety glasses on.

2017 · 2 incidents

August 30, 2017 OH · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Subtropolis Mining Co. · Over-exertion in lifting objects

Assisted coworker lifting hoses 8/30. Noticed L side pain next morning. Went to ER 9/1. Diagnosed w/abdominal wall strain. No treatment. Continued to work until 9/12 when off for unrelated elective surgery. Contact foreman 9/27 that ee had surgery 9/26 for hematoma thought to be caused by strain.

July 17, 2017 OH · Metal/Non-Metal master mechanic, foreman, supervisor POWERED HAULAGE
Subtropolis Mining Co. · Caught in, under or between running or meshing objects

Was moving the man lift basket. When it stopped, it came to rest against the handrail of the processing plant catwalk. This pinched the skin off at the tip of the finger.

2016 · 3 incidents

May 6, 2016 OH · Metal/Non-Metal miner, prospector, nec HANDTOOLS (NONPOWERED)
Subtropolis Mining Co. · Struck by... (Not Elsewhere Classified)

While trying to cut conveyor belt, employees hand slipped and utility knife cut hand requiring three stitches

April 25, 2016 OH · Metal/Non-Metal electrician, lineman HANDLING OF MATERIALS
Subtropolis Mining Co. · Absorption of radiations, caustics, toxic and noxious substances

Employee was helping with a concrete driveway pour. When EE stepped in wet concrete to spread it, the concrete raised higher then the boots, causing it to be in contact with EE's skin.

March 4, 2016 OH · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
Subtropolis Mining Co. · Struck by falling object

While attempting to lift a heavy plate to secure on the machine, the plate slipped of the machine and employee tried to catch it. This resulted in a strain to the lower back.

2015 · 1 incident

August 1, 2015 OH · Metal/Non-Metal outside foreman, leadman POWERED HAULAGE
Subtropolis Mining Co. · Struck by... (Not Elsewhere Classified)

The hill belt was overloaded. They were unaware that gearbox on south side did not have a backstop and disconnected gear box on north side of belt by unbolting turnbuckle from conveyor frame. Gearbox started rotating backwards and struck EE. EE had broken bones in left arm, dislocated left knee, contusions on left arm and left leg, internal bleeding, collapsed lung.

2013 · 1 incident

July 1, 2013 OH · Metal/Non-Metal ledgeman/hand, quarry man HANDLING OF MATERIALS
Subtropolis Mining Co. · Caught in, under or between a moving and a stationary object

Employee was closing the door of the scaler with his right hand. He inadvertently closed the door on his left thumb. His thumb is broken in 5 places.

2012 · 2 incidents

May 10, 2012 OH · Metal/Non-Metal electrician, lineman HANDLING OF MATERIALS
Subtropolis Mining Co. · Over-exertion in lifting objects

Employee was in the man basket hanging 480 cable on roof bolts. He started to feel sore during the day. That night the pain got worse and the next day he went to a doctor.

May 1, 2012 OH · Metal/Non-Metal ledgeman/hand, quarry man HANDTOOLS (NONPOWERED)
Subtropolis Mining Co. · Struck by... (Not Elsewhere Classified)

Employee was cleaning under the lateral 2 head drive with a shovel when a clump of mud slid down and hit him in the knee. The mud caused a bruise on his knee. The injury is a sprained or bruised knee. He was given a brace and took 3 days off.

2011 · 2 incidents

April 21, 2011 OH · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Subtropolis Mining Co. · Fall to the walkway or working surface

EE was checking the sight pole for an excavator operator. Some of the stone below his feet gave way and he fell into the ditch. He continued to work the rest of the day saying he was fine. He decided to go to the doctor on 4/22/2011. EE is part-time and any time off was not related to this injury.

March 22, 2011 OH · Metal/Non-Metal welder (shop) SLIP OR FALL OF PERSON
Subtropolis Mining Co. · Fall to the walkway or working surface

Two workers were putting together 6" diameter yelomine pip. EE got his foot stuck in a strap, which caused him to trip, twist and fall on the ground. The resulting injury was a broken fibula in ee right leg.

2010 · 3 incidents

August 27, 2010 OH · Metal/Non-Metal section foreman, bullgang foreman, labor foreman, leadman, shift boss HANDLING OF MATERIALS
Subtropolis Mining Co. · Struck against stationary object

Climbing off the DBT Crusher. Cut left middle finger on metal burr sticking up off the wing

June 7, 2010 OH · Metal/Non-Metal ledgeman/hand, quarry man OTHER
Subtropolis Mining Co. · (Not Elsewhere Classified)

Wasn't feeling well when arriving at work. Continued to feel worse throughout the evening. An ambulance was called.

May 26, 2010 OH · Metal/Non-Metal laborer, bull gang, faceman, parts runner, roustabout, roof trimmer/scaler HANDTOOLS (NONPOWERED)
Subtropolis Mining Co. · Struck by... (Not Elsewhere Classified)

While cutting a piece of shot wire, employee cut left thumb with knife.

2009 · 3 incidents

April 17, 2009 OH · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Subtropolis Mining Co. · Over-exertion (Not Elsewhere Classified)

Employee was attempting to wash out the bucket on the 980 Wheel Loader he was operating and while pulling on the 1 1/2" wash out hose, lost his footing and twisted his ankle. He was taken to the hospital for treatment. Upon inspection of the area, the ground apppears relatively flat. The weather was sunny and dry. The ground may have been wet from spraying the bucket out.

2008 · 1 incident

August 22, 2008 OH · Metal/Non-Metal assistant mine foreman, assistant mine manager HANDTOOLS (NONPOWERED)
Subtropolis Mining Co. · Struck by... (Not Elsewhere Classified)

Injury was barring the feeder when he missed the mud he was barring. The bar hit his right pinky finger up against the feeder. He had four stitches and tore the nail off.

2007 · 1 incident

July 17, 2007 OH · Metal/Non-Metal blaster, shooter, shotfirer, explosive worker, powder gang/monkey FALL OF ROOF OR BACK
Subtropolis Mining Co. · Struck by falling object

A loose piece of rock fell and struck the employee in the lower back.

2005 · 1 incident

August 15, 2005 OH · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Subtropolis Mining Co. · Fall from machine

Lifting the ROPS from the piece of equipment. It sprang free, striking the mechanic and causing him to fall (93") to the ground.

For insurers, brokers, and safety consultants

The full compliance file on Subtropolis

A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.