R10 Quarry Metal/Non-Metal
MSHA record for R10 Quarry (mine ID 6600013). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.
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- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
R10 Quarry recorded 0.00 reportable injury cases per 100 full-time workers in 2023.
Injury rate, 2023
ⓘ
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.0.00
total case rate
0.00
days-away rate
0.000
fatality rate
No reportable injury cases in any year shown. Employee-hours were reported in each of those years, so these are true zeros rather than missing data. Citations, listed in the compliance record above, are inspector-found violations and are counted separately from worker injuries.
Below average. The US metal and nonmetal mining average was 1.78 and the all-US-mining average was 2.10 cases per 100 workers.
In Guam, metal and nonmetal mining averaged 0.00 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
| Year | total case rate | days-away | fatal |
|---|---|---|---|
| 2023 * | 0.00 | 0.00 | 0.000 |
| 2022 * | 0.00 | 0.00 | 0.000 |
| 2021 * | 0.00 | 0.00 | 0.000 |
| 2020 * | 0.00 | 0.00 | 0.000 |
| 2018 * | 0.00 | 0.00 | 0.000 |
* Fewer than 100,000 employee-hours that year; the rate is less stable.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Ownership history
- Hawaiian Rock Products 2015 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
| Year | Employees |
|---|---|
| 2025 | 28 |
| 2024 | 19 |
| 2023 | 41 |
| 2022 | 62 |
| 2021 | 61 |
| 2020 | 52 |
| 2019 | 18 |
| 2018 | 62 |
| 2017 | 57 |
Source: MSHA quarterly employment and production, 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 | 1,025 | 0 | 0 | 0.0 |
| 2025 Q3 | 2,875 | 0 | 0 | 0.0 |
| 2025 Q2 | 2,532 | 0 | 0 | 0.0 |
| 2025 Q1 | 2,557 | 0 | 0 | 0.0 |
| 2024 Q4 | 1,012 | 0 | 0 | 0.0 |
| 2024 Q3 | 506 | 0 | 0 | 0.0 |
| 2024 Q2 | 50 | 0 | 0 | 0.0 |
| 2024 Q1 | 425 | 0 | 0 | 0.0 |
Show 27 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q4 | 3,604 | 0 | 0 | 0.0 |
| 2023 Q3 | 5,806 | 0 | 0 | 0.0 |
| 2023 Q2 | 7,248 | 0 | 0 | 0.0 |
| 2023 Q1 | 6,011 | 0 | 0 | 0.0 |
| 2022 Q4 | 8,253 | 0 | 0 | 0.0 |
| 2022 Q3 | 10,081 | 0 | 0 | 0.0 |
| 2022 Q2 | 7,280 | 0 | 0 | 0.0 |
| 2022 Q1 | 8,143 | 0 | 0 | 0.0 |
| 2021 Q4 | 7,043 | 0 | 0 | 0.0 |
| 2021 Q3 | 7,533 | 0 | 0 | 0.0 |
| 2021 Q2 | 9,195 | 0 | 0 | 0.0 |
| 2021 Q1 | 8,104 | 0 | 0 | 0.0 |
| 2020 Q4 | 6,495 | 0 | 0 | 0.0 |
| 2020 Q3 | 7,913 | 0 | 0 | 0.0 |
| 2020 Q2 | 7,856 | 0 | 0 | 0.0 |
| 2020 Q1 | 2,555 | 0 | 0 | 0.0 |
| 2019 Q4 | 578 | 0 | 0 | 0.0 |
| 2019 Q3 | 412 | 0 | 0 | 0.0 |
| 2019 Q2 | 1,150 | 0 | 0 | 0.0 |
| 2019 Q1 | 1,193 | 0 | 0 | 0.0 |
| 2018 Q4 | 1,859 | 0 | 0 | 0.0 |
| 2018 Q3 | 8,136 | 0 | 0 | 0.0 |
| 2018 Q2 | 6,785 | 0 | 0 | 0.0 |
| 2018 Q1 | 8,760 | 0 | 0 | 0.0 |
| 2017 Q4 | 9,893 | 0 | 0 | 0.0 |
| 2017 Q3 | 11,483 | 0 | 0 | 0.0 |
| 2017 Q2 | 5,063 | 0 | 0 | 0.0 |
No reportable incidents on file.
MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.