Employee was driving a Superior Bowen's (Contractor) water truck down the slope into mine and lost control, impacting a dome out (located at 2N- 0 E/W) at the bottom of slope resulting in ramping up of truck over and through to other side.
Stamper Underground: 1 recorded fatality Metal/Non-Metal
Stamper Underground has $156K in proposed MSHA penalties and $0 outstanding across 16 contested dockets, plus health sampling and the full incident record.
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- Fatalities
- 1
- Total incidents
- 23
- Years on record
- 2003–2025
- Latest incident
- May 2025
ⓘ
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.ⓘ
A Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.Stamper Underground has $156K in proposed MSHA penalties and $0 outstanding across 16 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 32 · 94%
- Stood as issued 1 · 3%
- Vacated or withdrawn 1 · 3%
ⓘ
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 Vacated and withdrawn citations, and settlements that removed the designation, count against.ⓘ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 2016-0213 | Settlement | McCarthy | 2016 | $9K → $7K |
| CENT 2006-122M | Settlement | Manning | 2010 | $8K → $7K |
| CENT 2014-0288 | Settlement | Rae | 2015 | $6K → $6K |
| CENT 2022-0063 | Settlement | Manning | 2023 | $5K → $715 |
| CENT 2023-0249 | Settlement | Paez | 2024 | $5K → $1K |
| CENT 2008-120M | Settlement | Manning | 2008 | $3K → $2K |
ⓘ
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: 2025-04-03
ⓘ
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.- Diesel particulate (total carbon)6012 over
- Total Carbon,TC1810 over
- Total Carbon,calculated from elemental carbon.189 over
- Quartz, respirable, >1% Qtz716 over
Show the individual readings (100)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2023-02-08 | TC @ 160 | 167 | 160 | 1.04 | Truck Driver |
| 2022-02-08 | TC @ 160 | 581 | 160 | 3.63 | Drill Operator, Jumbo Perc. |
| 2021-05-06 | TC @ 160 | 361 | 160 | 2.26 | Scaling (mechanical) |
| 2019-12-18 | TC @ 160 | 657 | 160 | 4.11 | Drill Operator, Jumbo Perc. |
| 2018-05-20 | TC @ 160 | 185 | 160 | 1.16 | Scaling (mechanical) |
| 2012-12-05 | TC @ 160 | 161 | 160 | 1.01 | Front-end Loader Operator |
| 2012-12-05 | TC @ 160 | 161 | 160 | 1.01 | Truck Driver |
| 2012-05-02 | TC @ 160 | 365 | 160 | 2.28 | Drill Operator, Jumbo Perc. |
| 2012-05-02 | TC @ 160 | 198 | 160 | 1.24 | Blaster, Powder Gang |
| 2011-03-15 | TC @ 160 | 181 | 160 | 1.13 | Blaster, Powder Gang |
| 2008-07-08 | TC @ 160 | 175 | 160 | 1.09 | Blaster, Powder Gang |
| 2008-07-08 | TC @ 160 | 238 | 160 | 1.49 | Drill Operator, Rotary |
| 2008-07-08 | TC from EC @ 160 | 163 | 160 | 1.02 | Drill Operator, Rotary |
| 2008-03-26 | Quartz, respirable, >1% Qtz | 6.55 | 2.51 | 2.61 | Laborer, Bullgang |
| 2007-10-24 | TCarbon @ 350 | 390.18 | 350 | 1.11 | Front-end Loader Operator |
| 2007-02-07 | TCarbon @ 350 | 370.47 | 350 | 1.06 | Blaster, Powder Gang |
| 2004-06-02 | Quartz, respirable, >1% Qtz | 2.35 | 1.91 | 1.23 | Drill Operator, Jumbo Perc. |
| 2004-03-18 | Total Carbon,TC | 446.44 | 400 | 1.12 | Drill Operator, Jumbo Perc. |
| 2003-10-21 | Quartz, respirable, >1% Qtz | 1.8 | 1.62 | 1.11 | Drill Operator, Rotary Air |
| 2003-10-21 | Quartz, respirable, >1% Qtz | 2.12 | 1.67 | 1.27 | Front-end Loader Operator |
| 2003-06-26 | Total Carbon,calculated from elemental carbon. | 715.24 | 400 | 1.79 | Truck Driver |
| 2003-06-26 | Total Carbon,TC | 733.95 | 400 | 1.83 | Truck Driver |
| 2003-06-26 | Total Carbon,calculated from elemental carbon. | 630.71 | 400 | 1.58 | Truck Driver |
| 2003-06-26 | Total Carbon,calculated from elemental carbon. | 568.71 | 400 | 1.42 | Truck Driver |
| 2003-06-26 | Total Carbon,TC | 654.14 | 400 | 1.64 | Truck Driver |
| 2003-06-26 | Total Carbon,calculated from elemental carbon. | 519.27 | 400 | 1.30 | Front-end Loader Operator |
| 2003-06-26 | Total Carbon,TC | 556.89 | 400 | 1.39 | Truck Driver |
| 2003-06-26 | Total Carbon,TC | 561.72 | 400 | 1.40 | Front-end Loader Operator |
| 2002-12-18 | Total Carbon,TC | 1342.86 | 400 | 3.36 | Drill Operator, Rotary |
| 2002-12-18 | Total Carbon,TC | 1471.14 | 400 | 3.68 | Blaster, Powder Gang |
| 2002-12-18 | Total Carbon,calculated from elemental carbon. | 959.89 | 400 | 2.40 | Blaster, Powder Gang |
| 2002-12-18 | Total Carbon,TC | 689.9 | 400 | 1.72 | Front-end Loader Operator |
| 2002-12-18 | Total Carbon,TC | 636.5 | 400 | 1.59 | Truck Driver |
| 2002-12-18 | Total Carbon,calculated from elemental carbon. | 689.63 | 400 | 1.72 | Front-end Loader Operator |
| 2002-12-18 | Total Carbon,calculated from elemental carbon. | 1064.41 | 400 | 2.66 | Drill Operator, Rotary |
| 2002-12-18 | Total Carbon,calculated from elemental carbon. | 664.14 | 400 | 1.66 | Truck Driver |
| 2002-12-18 | Total Carbon,calculated from elemental carbon. | 878.3 | 400 | 2.20 | Blaster, Powder Gang |
| 2002-12-18 | Total Carbon,TC | 1559.03 | 400 | 3.90 | Blaster, Powder Gang |
| 2002-11-26 | Quartz, respirable, >1% Qtz | 2.64 | 1.58 | 1.67 | Truck Driver |
| 2002-11-26 | Quartz, respirable, >1% Qtz | 2.7 | 2.68 | 1.01 | Blaster, Powder Gang |
| 2025-04-03 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2025-04-03 | Quartz, respirable, >1% Qtz | 0.16 | Cleanup Man | ||
| 2024-08-28 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2023-12-07 | TC from EC @ 160 | 0 | 160 | 0.00 | Roof Bolter, Rock |
| 2023-12-07 | EC @ 160 | 0 | 160 | 0.00 | Blaster, Powder Gang |
| 2023-12-07 | TC @ 160 | 0 | 160 | 0.00 | Blaster, Powder Gang |
| 2023-12-07 | TC @ 160 | 0 | 160 | 0.00 | Roof Bolter, Rock |
| 2023-12-07 | ORGANIC CARBON | 0 | Blaster, Powder Gang | ||
| 2023-12-07 | ORGANIC CARBON | 0 | Roof Bolter, Rock | ||
| 2023-12-07 | TC @ 160 | 0 | 160 | 0.00 | Drill Operator, Jumbo Perc. |
| 2023-12-07 | ORGANIC CARBON | 0 | Drill Operator, Jumbo Perc. | ||
| 2023-12-07 | EC @ 160 | 0 | 160 | 0.00 | Roof Bolter, Rock |
| 2023-12-07 | TC from EC @ 160 | 0 | 160 | 0.00 | Drill Operator, Jumbo Perc. |
| 2023-12-07 | EC @ 160 | 0 | 160 | 0.00 | Drill Operator, Jumbo Perc. |
| 2023-12-07 | TC from EC @ 160 | 0 | 160 | 0.00 | Blaster, Powder Gang |
| 2023-07-26 | Quartz, respirable, >1% Qtz | 0.32 | Truck Driver | ||
| 2023-07-26 | Quartz, respirable, >1% Qtz | 0.16 | Truck Driver | ||
| 2023-07-26 | Respirable dust, <.1mg | 0 | Cleanup Man | ||
| 2023-07-26 | Quartz, respirable, >1% Qtz | 0.4 | Crusher Oper/Worker | ||
| 2023-02-08 | EC @ 160 | 0 | 160 | 0.00 | Scaling (mechanical) |
| 2023-02-08 | ORGANIC CARBON | 48 | Blaster, Powder Gang | ||
| 2023-02-08 | TC @ 160 | 0 | 160 | 0.00 | Scaling (mechanical) |
| 2023-02-08 | TC from EC @ 160 | 0 | 160 | 0.00 | Truck Driver |
| 2023-02-08 | EC @ 160 | 0 | 160 | 0.00 | Truck Driver |
| 2023-02-08 | ORGANIC CARBON | 0 | Scaling (mechanical) | ||
| 2023-02-08 | TC from EC @ 160 | 0 | 160 | 0.00 | Blaster, Powder Gang |
| 2023-02-08 | EC @ 160 | 0 | 160 | 0.00 | Blaster, Powder Gang |
| 2023-02-08 | TC from EC @ 160 | 0 | 160 | 0.00 | Front-end Loader Operator |
| 2023-02-08 | TC @ 160 | 66 | 160 | 0.41 | Blaster, Powder Gang |
| 2023-02-08 | TC from EC @ 160 | 0 | 160 | 0.00 | Scaling (mechanical) |
| 2023-02-08 | EC @ 160 | 0 | 160 | 0.00 | Front-end Loader Operator |
| 2023-02-08 | TC @ 160 | 0 | 160 | 0.00 | Front-end Loader Operator |
| 2023-02-08 | ORGANIC CARBON | 0 | Front-end Loader Operator | ||
| 2023-02-08 | ORGANIC CARBON | 153 | Truck Driver | ||
| 2022-02-09 | Quartz, respirable, >1% Qtz | 1.03 | 1.92 | 0.54 | Crusher Oper/Worker |
| 2022-02-09 | Nuisance dust, respirable, <1% Qtz | 0.14 | 10 | 0.01 | Sampler, Dust |
| 2022-02-09 | Nuisance dust, respirable, <1% Qtz | 0.18 | 10 | 0.02 | Front-end Loader Operator |
| 2022-02-09 | Quartz, respirable, >1% Qtz | 0.43 | Truck Driver | ||
| 2022-02-09 | Quartz, respirable, >1% Qtz | 0.46 | Supervisor, Co. Official | ||
| 2022-02-08 | TC from EC @ 160 | 0 | 160 | 0.00 | Scaling (mechanical) |
| 2022-02-08 | ORGANIC CARBON | 125 | Scaling (mechanical) | ||
| 2022-02-08 | TC @ 160 | 146 | 160 | 0.91 | Scaling (mechanical) |
| 2022-02-08 | EC @ 160 | 0 | 160 | 0.00 | Drill Operator, Jumbo Perc. |
| 2022-02-08 | EC @ 160 | 0 | 160 | 0.00 | Scaling (mechanical) |
| 2022-02-08 | TC from EC @ 160 | 0 | 160 | 0.00 | Drill Operator, Jumbo Perc. |
| 2022-02-08 | EC @ 160 | 0 | 160 | 0.00 | Blaster, Powder Gang |
| 2022-02-08 | ORGANIC CARBON | 565 | Drill Operator, Jumbo Perc. | ||
| 2022-02-08 | TC @ 160 | 49 | 160 | 0.31 | Blaster, Powder Gang |
| 2022-02-08 | TC from EC @ 160 | 0 | 160 | 0.00 | Scaling (mechanical) |
| 2022-02-08 | ORGANIC CARBON | 32 | Scaling (mechanical) | ||
| 2022-02-08 | TC from EC @ 160 | 0 | 160 | 0.00 | Blaster, Powder Gang |
| 2022-02-08 | ORGANIC CARBON | 31 | Blaster, Powder Gang | ||
| 2022-02-08 | TC @ 160 | 47 | 160 | 0.29 | Scaling (mechanical) |
| 2022-02-08 | EC @ 160 | 0 | 160 | 0.00 | Scaling (mechanical) |
| 2021-05-06 | ORGANIC CARBON | 0.06 | Blaster, Powder Gang | ||
| 2021-05-06 | TC @ 160 | 93 | 160 | 0.58 | Blaster, Powder Gang |
| 2021-05-06 | EC @ 160 | 39 | 160 | 0.24 | Scaling (mechanical) |
| 2021-05-06 | TC from EC @ 160 | 39 | 160 | 0.24 | Scaling (mechanical) |
| 2021-05-06 | ORGANIC CARBON | 0.32 | Scaling (mechanical) | ||
| 2021-05-06 | ORGANIC CARBON | 0.04 | Drill Operator, Jumbo Perc. |
Area samples (mill and shop air)
Last sampled: 2023-12-07Show the individual readings (18)
| Date | Contaminant | Concentration | Limit | Conc / limit | Area sampled |
|---|---|---|---|---|---|
| 2023-12-07 | TC @ 160 | 0 | UG TRAVEL/HAULAGE | ||
| 2023-12-07 | EC @ 160 | 0 | UG TRAVEL/HAULAGE | ||
| 2023-02-08 | TC @ 160 | 0 | UG TRAVEL/HAULAGE | ||
| 2023-02-08 | EC @ 160 | 0 | UG TRAVEL/HAULAGE | ||
| 2022-02-08 | TC from EC @ 160 | 0 | UG TRAVEL/HAULAGE | ||
| 2022-02-08 | EC @ 160 | 0 | UG TRAVEL/HAULAGE | ||
| 2021-05-06 | TC from EC @ 160 | 0 | UG TRAVEL/HAULAGE | ||
| 2021-05-06 | EC @ 160 | 34 | UG TRAVEL/HAULAGE | ||
| 2021-05-06 | TC @ 160 | 92 | UG TRAVEL/HAULAGE | ||
| 2019-12-18 | TC from EC @ 160 | 0 | UG TRAVEL/HAULAGE | ||
| 2019-12-18 | TC @ 160 | 86 | UG TRAVEL/HAULAGE | ||
| 2019-12-18 | EC @ 160 | 52 | UG TRAVEL/HAULAGE | ||
| 2012-05-02 | TC @ 160 | 63 | UG TRAVEL/HAULAGE A | ||
| 2012-05-02 | EC @ 160 | 61 | UG TRAVEL/HAULAGE A | ||
| 2012-05-02 | TC from EC @ 160 | 0 | UG TRAVEL/HAULAGE A | ||
| 2008-07-08 | TC @ 160 | 103 | UG ACTIVE MINE | ||
| 2008-07-08 | TC from EC @ 160 | 0 | UG ACTIVE MINING | ||
| 2008-07-08 | EC @ 160 | 69 | UG ACTIVE MINE |
Stamper Underground recorded 0.00 reportable injury cases per 100 full-time workers in 2024.
ⓘ
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 |
|---|---|---|---|
| 2024 * | 0.00 | 0.00 | 0.000 |
| 2023 | 0.00 | 0.00 | 0.000 |
| 2022 | 0.00 | 0.00 | 0.000 |
| 2021 | 0.00 | 0.00 | 0.000 |
| 2020 | 3.61 | 0.00 | 0.000 |
| 2019 | 0.00 | 0.00 | 0.000 |
| 2018 | 1.71 | 1.71 | 0.000 |
| 2017 | 1.89 | 0.00 | 0.000 |
- Hunt Midwest Mining Inc 2001 to 2005
- Martin Marietta Kansas City, LLC 2005 to present
| Year | Employees |
|---|---|
| 2026 | 4 |
| 2025 | 6 |
| 2024 | 19 |
| 2023 | 53 |
| 2022 | 47 |
| 2021 | 44 |
| 2020 | 39 |
| 2019 | 40 |
| 2018 | 52 |
| 2017 | 53 |
| 2016 | 37 |
| 2015 | 31 |
| 2014 | 30 |
| 2013 | 26 |
| 2012 | 28 |
| 2011 | 24 |
| 2010 | 26 |
| 2009 | 24 |
| 2008 | 22 |
| 2007 | 28 |
| 2006 | 35 |
| 2005 | 29 |
| 2004 | 6 |
| 2003 | 6 |
| 2002 | 4 |
| 2001 | 3 |
Stamper Underground sits in Platte County, Missouri, where the Census mining category is 0.1% 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 | 1,221 | 0 | 0 | 0.0 |
| 2026 Q1 | 1,613 | 0 | 0 | 0.0 |
| 2025 Q4 | 2,819 | 0 | 0 | 0.0 |
| 2025 Q3 | 4,309 | 0 | 0 | 0.0 |
| 2025 Q2 | 4,049 | 3 | 0 | 740.9 |
| 2025 Q1 | 1,367 | 0 | 0 | 0.0 |
| 2024 Q4 | 2,010 | 0 | 0 | 0.0 |
| 2024 Q3 | 2,121 | 1 | 0 | 471.5 |
Show 93 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q2 | 6,337 | 0 | 0 | 0.0 |
| 2024 Q1 | 34,436 | 2 | 0 | 58.1 |
| 2023 Q4 | 39,026 | 1 | 0 | 25.6 |
| 2023 Q3 | 40,163 | 2 | 0 | 49.8 |
| 2023 Q2 | 36,581 | 5 | 1 | 136.7 |
| 2023 Q1 | 34,909 | 2 | 0 | 57.3 |
| 2022 Q4 | 34,856 | 2 | 0 | 57.4 |
| 2022 Q3 | 39,311 | 1 | 1 | 25.4 |
| 2022 Q2 | 32,999 | 1 | 0 | 30.3 |
| 2022 Q1 | 28,880 | 3 | 0 | 103.9 |
| 2021 Q4 | 33,914 | 2 | 0 | 59.0 |
| 2021 Q3 | 32,174 | 7 | 0 | 217.6 |
| 2021 Q2 | 30,338 | 2 | 0 | 65.9 |
| 2021 Q1 | 27,061 | 3 | 0 | 110.9 |
| 2020 Q4 | 32,279 | 8 | 5 | 247.8 |
| 2020 Q3 | 28,178 | 15 | 5 | 532.3 |
| 2020 Q2 | 26,484 | 1 | 0 | 37.8 |
| 2020 Q1 | 23,961 | 6 | 2 | 250.4 |
| 2019 Q4 | 28,570 | 3 | 0 | 105.0 |
| 2019 Q3 | 29,292 | 2 | 0 | 68.3 |
| 2019 Q2 | 23,454 | 6 | 2 | 255.8 |
| 2019 Q1 | 19,630 | 1 | 0 | 50.9 |
| 2018 Q4 | 22,975 | 0 | 0 | 0.0 |
| 2018 Q3 | 28,631 | 7 | 2 | 244.5 |
| 2018 Q2 | 32,212 | 2 | 0 | 62.1 |
| 2018 Q1 | 33,042 | 5 | 2 | 151.3 |
| 2017 Q4 | 32,971 | 4 | 1 | 121.3 |
| 2017 Q3 | 12,917 | 4 | 0 | 309.7 |
| 2017 Q2 | 31,035 | 1 | 1 | 32.2 |
| 2017 Q1 | 28,816 | 6 | 2 | 208.2 |
| 2016 Q4 | 24,365 | 6 | 2 | 246.3 |
| 2016 Q3 | 25,835 | 2 | 1 | 77.4 |
| 2016 Q2 | 25,514 | 0 | 0 | 0.0 |
| 2016 Q1 | 28,305 | 2 | 0 | 70.7 |
| 2015 Q4 | 24,167 | 3 | 1 | 124.1 |
| 2015 Q3 | 22,120 | 2 | 0 | 90.4 |
| 2015 Q2 | 23,135 | 2 | 1 | 86.4 |
| 2015 Q1 | 22,810 | 5 | 3 | 219.2 |
| 2014 Q4 | 28,632 | 2 | 1 | 69.9 |
| 2014 Q3 | 28,311 | 4 | 2 | 141.3 |
| 2014 Q2 | 20,194 | 7 | 2 | 346.6 |
| 2014 Q1 | 17,358 | 5 | 3 | 288.1 |
| 2013 Q4 | 19,635 | 9 | 1 | 458.4 |
| 2013 Q3 | 18,833 | 3 | 1 | 159.3 |
| 2013 Q2 | 15,263 | 1 | 1 | 65.5 |
| 2013 Q1 | 12,851 | 2 | 0 | 155.6 |
| 2012 Q4 | 12,814 | 2 | 1 | 156.1 |
| 2012 Q3 | 15,656 | 0 | 0 | 0.0 |
| 2012 Q2 | 19,087 | 3 | 0 | 157.2 |
| 2012 Q1 | 17,887 | 1 | 1 | 55.9 |
| 2011 Q4 | 17,920 | 4 | 1 | 223.2 |
| 2011 Q3 | 18,951 | 3 | 1 | 158.3 |
| 2011 Q2 | 16,779 | 4 | 2 | 238.4 |
| 2011 Q1 | 15,969 | 4 | 1 | 250.5 |
| 2010 Q4 | 18,811 | 6 | 1 | 319.0 |
| 2010 Q3 | 17,501 | 1 | 0 | 57.1 |
| 2010 Q2 | 16,936 | 2 | 0 | 118.1 |
| 2010 Q1 | 16,761 | 3 | 0 | 179.0 |
| 2009 Q4 | 20,661 | 3 | 2 | 145.2 |
| 2009 Q3 | 19,929 | 4 | 2 | 200.7 |
| 2009 Q2 | 17,238 | 18 | 8 | 1044.2 |
| 2009 Q1 | 14,870 | 7 | 2 | 470.7 |
| 2008 Q4 | 14,579 | 6 | 0 | 411.6 |
| 2008 Q3 | 13,976 | 6 | 1 | 429.3 |
| 2008 Q2 | 15,059 | 1 | 1 | 66.4 |
| 2008 Q1 | 14,954 | 7 | 3 | 468.1 |
| 2007 Q4 | 16,452 | 4 | 2 | 243.1 |
| 2007 Q3 | 15,376 | 6 | 3 | 390.2 |
| 2007 Q2 | 18,477 | 6 | 0 | 324.7 |
| 2007 Q1 | 15,376 | 4 | 0 | 260.1 |
| 2006 Q4 | 22,305 | 11 | 3 | 493.2 |
| 2006 Q3 | 23,806 | 10 | 4 | 420.1 |
| 2006 Q2 | 21,836 | 3 | 0 | 137.4 |
| 2006 Q1 | 21,225 | 1 | 1 | 47.1 |
| 2005 Q4 | 25,051 | 3 | 2 | 119.8 |
| 2005 Q3 | 26,176 | 8 | 2 | 305.6 |
| 2005 Q2 | 19,652 | 5 | 1 | 254.4 |
| 2005 Q1 | 15,023 | 5 | 4 | 332.8 |
| 2004 Q4 | 5,505 | 18 | 4 | 3269.8 |
| 2004 Q3 | 2,409 | 7 | 2 | 2905.8 |
| 2004 Q2 | 3,040 | 1 | 1 | 328.9 |
| 2004 Q1 | 2,754 | 1 | 0 | 363.1 |
| 2003 Q4 | 4,653 | 3 | 2 | 644.7 |
| 2003 Q3 | 5,729 | 1 | 0 | 174.6 |
| 2003 Q2 | 621 | 2 | 0 | 3220.6 |
| 2003 Q1 | 1,256 | 0 | 0 | 0.0 |
| 2002 Q4 | 2,644 | 4 | 1 | 1512.9 |
| 2002 Q3 | 1,871 | 4 | 1 | 2137.9 |
| 2002 Q2 | 1,669 | 4 | 0 | 2396.6 |
| 2002 Q1 | 1,450 | 2 | 0 | 1379.3 |
| 2001 Q4 | 1,317 | 4 | 1 | 3037.2 |
| 2001 Q3 | 2,393 | 2 | 2 | 835.8 |
| 2001 Q2 | 2,045 | 0 | 0 | 0.0 |
Fatalities at this mine
1 recordedReportable incidents
22 on file (excluding fatalities above)2025 · 1 incident
Employees arrived for the shift to find a backhoe on fire. Cause of fire was determined to be a lightning strike.
2024 · 1 incident
The mine operator has not yet determined the conditions contributing to the fall of ground.
2020 · 3 incidents
Taking hose off of packer while pressure was still up. Hose disconnected and hit employee in face blowing employee's safety glasses off causing chemical grout to blow into both eyes.
The employee was loading a shot underground when material fell from the working face, striking the employee.
An employee was assisting with the removal of a guard and lost balance, the injured employee attempted to stabilize the co-worker and injured EE's bicep in the process.
2018 · 1 incident
Employee was performing maintenance on a crusher. A chain used during the work shifted, startling the employee causing EE to lose balance and fall. Impact of the fall resulted in three stitches to EE's elbow.
2017 · 2 incidents
A record rainfall of 6.14", the largest amount of rain in one day since the construction of the Stamper Mine portal, resulted in the mine's intake lake releasing water. Water traveled down the slope and into a localized area of the mine. We do not believe that this event is "an unplanned inundation of a mine by a liquid" and are submitting the 7000-1 at MSHA's direction.
Employee was assisting with the clean-up of a conveyor when EE reported EE felt hot and dizzy. Employee cooled off in air conditioning and drank some water. After resting for around 30 minutes employee was still complaining so emergency services were contacted. EMS transported employee to an emergency room where EE received IV fluids and was released to full duty the same day.
2009 · 1 incident
EE was helping two other employees tension cable bolts using a hydraulic tensioner. The cable was bent and had bound inside the tensioner. A 4 lb hammer was being used to the knock down on the top of the tensioner as EE pulled downward on the tensioner handles. On the 3rd or 4th hit, the hammer deflected off and struck the employees finger.
2006 · 1 incident
Employee was loading anfo into one of the top holes of a heading being loaded. He was trying to insert the hose further into the hole by wiggiling it. While doing this the hose became caught. As he tried to free the hose he knocked a rock loose which fell and strugk his left forearm. The cut required stitches.
2005 · 2 incidents
Employee was exiting his Toro piece of mobile and caught his left hand pointer finger in the door. The pinching action resulted in a laceration that required 7 stitches.
The employee was performing maintenance on pins that connect a tilt cylinder. The equipment shifted and pinched his left hand ring finger from the 2nd knuckle out.
2004 · 8 incidents
EE WAS ANFOING A ROOM, WAS SWITCHING SIDES TO ANFO THE OTHER. IN THE PROCESS EE WAS WALKING BACKWARDS PULLING HOS, TRIPPED OVER A ROCK THAT HAD BEEN SCALED DOWN.
HE WAS CUTTING OFF ANGLE IRON WITH A CUT OFF SAW WHEN SPARKS BOUNCED OFF GUARD COMING UNDER SAFETY GLASSES HITTING RIGHT EYE.
MINER WAS INSTALLING 8' X 20' METAL SCREENS VERTICALLY ON 20' RIB. SCREEN PULLED LOOSE AND FELL APPROX 2' STRIKING HIM ON THE HAND.
SHOTCRETE FELL ONTO THE INTERSECTION OF CONVEYORS S-2 & S-3, A PIECE FELL APPROX. 15' X 30'X 6' THICK. DAMAGE WAS EXTENSIVE TO HEADSECTION OF S-2. THIS FALL TOOK PLACE OUTSIDE OF NORMAL WORKHOURS, NO ONE WAS IN THE MINE AT THE TIME. THE FALL WAS DISCOVERED ON MONDAY MORNING. NO ONE WAS ALLOWED TO ENTER UNTIL THE AREA WAS SECURE.
EE WAS LOADING A ROOM THAT HAD BEEN MECHANICALLY SEALED AS WELL AS HAND SEALED. A ROCK THE SIZE OF A BASKETBALL CAME LOOSE FROM THE FACE AS HE WAS LOADING AND STRUCK HIS HAND. IT LEFT A RED MARK BUT HE DID NOT REPORT IT. THE FOLLOWING DAY THE HAND WAS SORE AND SWOLLEN. HE CALLED IN ON THE MORNING OF 06/07/04 AND WAS TOLD TO GO TO CLINIC.
EE WAS OPERATING SKID STEER, CLEANING SPILLAGE FROM IN FRONT OF THE DUMP HOPPER. A EUCLID R-40 ARRIVED AT THE DUMP HOPPER TO DUMP. THE EUCLID R-40 DRIVER PULLED FORWARD AND STARTED TO BACK UP TO THE HOPPER. HE DID NOT SEE THE SKID STEER AND BACKED INTO IT, THROWING EE FORWARD AGAINST THE SAFETY BAR. DAMAGE TO SKID STEER WAS MINIMAL.
Strot crete at intersection conveyors s-2 and s-3 a centurm about 15'x15' fell an road service 3 men in mine at time of fall. used man pod to leave mine only men working on repair a laid in slope.
EMPLOYEE FAILED TO FOLLOW DUMP PROCEDURES PRIOR TO RE-ENTRY OF MINE CAUSING RAISED BE TO STRIKE MINE PORTAL.
2003 · 2 incidents
EMPLOYEE WAS MUCKING OUT A ROOM. WHILE TRAVELING FORWARD THE EQUIPMENT STRUCK A LOW SPOT IN THE ROOF WITH THE CAB OF THE LOADER. THIS ACTION STOPPED THE LOADER CAUSING HIS HEAD AND NECK TO MOV E FORWARD. EMPLOYEE EXPERIENCED SORENESS IN THE NECK.
A ROOF FALL OCCURRED AT INTERSECTION 1 NORTH / 1 WEST. A SECOND FALL OCCURRED 4/27/03 AT INTERSECTION 0 2 NORTH. THE EXACT CAUSE OF ROOF FALL IS UNKNOWN. TECHNICAL EXPERTISE FROM PRIVATE AS WE LL AS MSHA WILL YIELD MORE INFORMATION. BOTH FALLS OCCURRED ABOVE THE ANCHOR ZONE.