Mining Incidents

Fidian Quarry Metal/Non-Metal

Controlled by Mitsubishi Corp
Mangilao, Guam County, GU  ·  Active
MSHA Mine ID: 6600006

MSHA record for Fidian Quarry (mine ID 6600006). 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

Fidian Quarry recorded 0.00 reportable injury cases per 100 full-time workers in 2025.

Injury rate, 2025
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 1.65 and the all-US-mining average was 1.97 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
2025 * 0.00 0.00 0.000
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 * 0.00 0.00 0.000
2019 * 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
  1. Hawaiian Rock Products 2015 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 50
2025 113
2024 113
2023 121
2022 115
2021 106
2020 89
2019 81
2018 85
2017 68
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
2026 Q2 24,013 0 0 0.0
2026 Q1 23,688 0 0 0.0
2025 Q4 24,955 0 0 0.0
2025 Q3 25,182 0 0 0.0
2025 Q2 23,920 0 0 0.0
2025 Q1 25,187 0 0 0.0
2024 Q4 26,160 0 0 0.0
2024 Q3 31,788 0 0 0.0
Show 29 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 30,672 0 0 0.0
2024 Q1 38,273 0 0 0.0
2023 Q4 33,656 0 0 0.0
2023 Q3 37,172 0 0 0.0
2023 Q2 28,723 0 0 0.0
2023 Q1 27,721 0 0 0.0
2022 Q4 27,062 0 0 0.0
2022 Q3 34,502 0 0 0.0
2022 Q2 29,524 0 0 0.0
2022 Q1 28,308 0 0 0.0
2021 Q4 26,255 0 0 0.0
2021 Q3 30,574 0 0 0.0
2021 Q2 21,263 0 0 0.0
2021 Q1 19,038 0 0 0.0
2020 Q4 19,144 0 0 0.0
2020 Q3 15,957 0 0 0.0
2020 Q2 16,825 0 0 0.0
2020 Q1 18,324 0 0 0.0
2019 Q4 15,765 0 0 0.0
2019 Q3 16,248 0 0 0.0
2019 Q2 20,132 0 0 0.0
2019 Q1 17,077 0 0 0.0
2018 Q4 17,866 0 0 0.0
2018 Q3 17,202 0 0 0.0
2018 Q2 11,872 0 0 0.0
2018 Q1 13,115 0 0 0.0
2017 Q4 10,552 0 0 0.0
2017 Q3 12,593 0 0 0.0
2017 Q2 13,285 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.