EE was splitting stone with hammer and chisel. The Chisel slipped in EE's hand, and EE accidentally struck EE's thumb with the hammer.
Hamilton Quarry: 13 MSHA citations Metal/Non-Metal
Hamilton Quarry has $2K in proposed MSHA penalties and $0 outstanding across 1 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 0
- Total incidents
- 24
- Years on record
- 2016–2026
- Latest incident
- Feb 2026
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This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.Hamilton Quarry has $2K in proposed MSHA penalties and $0 outstanding across 1 contested dockets.
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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.- Stood as issued 1 · 100%
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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 |
|---|---|---|---|---|
| LAKE 2019-0126 | Dismissal | Bulluck | 2019 | $118 → $118 |
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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)
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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.
Last sampled: 2026-02-11
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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% Qtz3
- Respirable dust, <.1mg2
- Unlisted Particulate, respirable, <1% Qtz2
Show the individual readings (7)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2026-02-11 | Quartz, respirable, >1% Qtz | 0.44 | Cutting Mach Operator | ||
| 2026-02-11 | Quartz, respirable, >1% Qtz | 0.68 | 2.13 | 0.32 | Stone Polisher/Cutter |
| 2026-02-11 | Quartz, respirable, >1% Qtz | 0.87 | 2.08 | 0.42 | Stone Polisher/Cutter |
| 2018-10-30 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2018-10-30 | Unlisted Particulate, respirable, <1% Qtz | 0.16 | Laborer, Bullgang | ||
| 2018-10-30 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2018-10-30 | Unlisted Particulate, respirable, <1% Qtz | 0.22 | Laborer, Bullgang |
Hamilton Quarry recorded 5.27 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 * | 5.27 | 2.64 | 0.000 |
| 2024 * | 12.23 | 0.00 | 0.000 |
| 2023 * | 9.07 | 0.00 | 0.000 |
| 2022 * | 2.37 | 0.00 | 0.000 |
| 2021 * | 24.47 | 3.06 | 0.000 |
| 2020 * | 14.48 | 3.62 | 0.000 |
| 2019 * | 0.00 | 0.00 | 0.000 |
| 2018 * | 0.00 | 0.00 | 0.000 |
- Halquist Stone Company Inc 2012 to present
| Year | Employees |
|---|---|
| 2026 | 36 |
| 2025 | 34 |
| 2024 | 30 |
| 2023 | 31 |
| 2022 | 40 |
| 2021 | 30 |
| 2020 | 23 |
| 2019 | 15 |
| 2018 | 13 |
| 2017 | 11 |
| 2016 | 9 |
| 2015 | 6 |
| 2014 | 6 |
| 2013 | 3 |
| 2012 | 3 |
Hamilton Quarry sits in Fond du Lac County, Wisconsin, where the Census mining category is 0.2% of county employment.
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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 | 20,859 | 0 | 0 | 0.0 |
| 2026 Q1 | 15,022 | 2 | 1 | 133.1 |
| 2025 Q4 | 21,329 | 0 | 0 | 0.0 |
| 2025 Q3 | 20,648 | 0 | 0 | 0.0 |
| 2025 Q2 | 20,936 | 0 | 0 | 0.0 |
| 2025 Q1 | 12,934 | 0 | 0 | 0.0 |
| 2024 Q4 | 17,755 | 1 | 0 | 56.3 |
| 2024 Q3 | 17,713 | 0 | 0 | 0.0 |
Show 48 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q2 | 17,803 | 2 | 0 | 112.3 |
| 2024 Q1 | 12,117 | 0 | 0 | 0.0 |
| 2023 Q4 | 16,274 | 0 | 0 | 0.0 |
| 2023 Q3 | 16,201 | 1 | 0 | 61.7 |
| 2023 Q2 | 17,672 | 0 | 0 | 0.0 |
| 2023 Q1 | 16,022 | 0 | 0 | 0.0 |
| 2022 Q4 | 22,208 | 0 | 0 | 0.0 |
| 2022 Q3 | 24,099 | 0 | 0 | 0.0 |
| 2022 Q2 | 22,430 | 3 | 0 | 133.7 |
| 2022 Q1 | 15,507 | 0 | 0 | 0.0 |
| 2021 Q4 | 18,993 | 1 | 0 | 52.7 |
| 2021 Q3 | 17,679 | 0 | 0 | 0.0 |
| 2021 Q2 | 16,977 | 0 | 0 | 0.0 |
| 2021 Q1 | 11,735 | 0 | 0 | 0.0 |
| 2020 Q4 | 14,770 | 0 | 0 | 0.0 |
| 2020 Q3 | 16,084 | 0 | 0 | 0.0 |
| 2020 Q2 | 14,552 | 0 | 0 | 0.0 |
| 2020 Q1 | 9,840 | 0 | 0 | 0.0 |
| 2019 Q4 | 9,831 | 0 | 0 | 0.0 |
| 2019 Q3 | 10,287 | 0 | 0 | 0.0 |
| 2019 Q2 | 9,914 | 0 | 0 | 0.0 |
| 2019 Q1 | 4,240 | 0 | 0 | 0.0 |
| 2018 Q4 | 6,382 | 2 | 0 | 313.4 |
| 2018 Q3 | 6,717 | 0 | 0 | 0.0 |
| 2018 Q2 | 8,625 | 0 | 0 | 0.0 |
| 2018 Q1 | 7,466 | 0 | 0 | 0.0 |
| 2017 Q4 | 7,837 | 0 | 0 | 0.0 |
| 2017 Q3 | 7,285 | 0 | 0 | 0.0 |
| 2017 Q2 | 4,843 | 0 | 0 | 0.0 |
| 2017 Q1 | 3,871 | 0 | 0 | 0.0 |
| 2016 Q4 | 5,653 | 0 | 0 | 0.0 |
| 2016 Q3 | 6,522 | 0 | 0 | 0.0 |
| 2016 Q2 | 3,222 | 0 | 0 | 0.0 |
| 2016 Q1 | 2,545 | 0 | 0 | 0.0 |
| 2015 Q4 | 5,042 | 0 | 0 | 0.0 |
| 2015 Q3 | 4,488 | 0 | 0 | 0.0 |
| 2015 Q2 | 2,358 | 0 | 0 | 0.0 |
| 2015 Q1 | 1,095 | 0 | 0 | 0.0 |
| 2014 Q4 | 1,733 | 0 | 0 | 0.0 |
| 2014 Q3 | 3,885 | 1 | 0 | 257.4 |
| 2014 Q2 | 4,251 | 0 | 0 | 0.0 |
| 2014 Q1 | 1,714 | 0 | 0 | 0.0 |
| 2013 Q4 | 1,875 | 0 | 0 | 0.0 |
| 2013 Q3 | 2,007 | 0 | 0 | 0.0 |
| 2013 Q2 | 1,417 | 0 | 0 | 0.0 |
| 2013 Q1 | 0 | 0 | 0 | |
| 2012 Q4 | 1,701 | 0 | 0 | 0.0 |
| 2012 Q3 | 879 | 0 | 0 | 0.0 |
Reportable incidents
24 on file2026 · 1 incident
2025 · 2 incidents
EE pushing stone off forks onto a pallet and felt abdomen pain.
EE lifting stone in quarry, stone shifted and pinched finger between stone and quarry floor.
2024 · 4 incidents
EE splitting stone, went to swing, but stone split mid swing causing EE to swing and not hit anything.
Employee was splitting field stone when a piece of EE's chisel broke off and hit EE's knee.
EE working in quarry splitting stone using chisel, piece came off chisel and hit knee and was stuck in skin.
EE was carrying a stone, left foot slipped but EE caught self and felt pain.
2023 · 3 incidents
EE was adjusting a piece of flag stone to be stacked, another piece that was already stacked fell, hitting EE in the foot.
EE carrying stone, stone slipped in hands and fell on right foot.
EE carrying stone in quarry, slipped and felt pain in back.
2022 · 1 incident
EE using chisel to split stone, missed chisel and hit finger
2021 · 8 incidents
EE was picking up a stone approximately 150 lbs., twisted to put it on a pallet, and felt lower back pain.
EE picked up stone approximately 80-120 lbs., set it on EE's thighs, rolled stone towards chest, adjusted grip on the stone, and set it on the pallet. When the stone rolled up and towards EE's chest it contacted EE's left ribs, resulting in a fracture.
Employee was stacking large stone when EE felt pain in EE's elbows and wrists. The condition worsened over time. Employee sought medical care on 10/29/21. EE was diagnosed with joint pain. Injury was determined reportable on 10/29/21.
On Wednesday, 5/12/21, at 2:48 pm, employee moved a stone forward on the feeder conveyor towards the breaker. They lifted it with the lifter table. EE then attempted to spin the stone with left hand when the stone slipped off the lifter table and fell. When the stone fell it pinched their left 2nd digit in between it and the feeder conveyor resulting in a laceration/open wound.
EE was pulling stone on a breaker feeder table when a small piece broke off, fell off the table, and contacted the top of EE's left ankle resulting in a laceration.
At 9:45 am on Friday, 4/16/21, employee was attempting to climb over a conveyor, when a foot became stuck in a pallet, employee lost balance, and fell sideways onto the concrete floor, hitting left shoulder on the floor.
EE reported left shoulder pain to the supervisor. EE felt pain in the shoulder when EE was swinging a hammer to hit a chisel on a piece of stone.
EE was sorting and stacking stone in the Hamilton Quarry. EE picked up a piece of stone and was carrying it out of the stone pile when EE slipped and twisted EE's back.
2020 · 4 incidents
Employee was stacking stone on a pallet when a piece of stone fell off the pallet and struck EE in the hip and foot resulting in contusions.
Employee was sorting and stacking stone in the quarry. EE lifted a 50 lb. stone and felt pain in EE's lower back.
At 4:00 pm on Tuesday, 6/16/20, EE was feeding a splitter at the Hamilton Shop. EE was turning a stone on the turn table on the feeder table when the stone moved suddenly and EE's left 4th finger was pinched between the stone and a piece of steel on the feeder table, resulting in a laceration.
Employee pushed a stone onto a pallet and felt lower back pain.
2016 · 1 incident
Employee was setting down a rock resulting in a fracture to left fifth finger.