Mining Incidents

Pioneer Metal/Non-Metal

M Sonomura Contracting Company Inc · Surface
Controlled by Roy Sonomura
hilo, Hawaii County, HI  ·  Abandoned
MSHA Mine ID: 5100194

MSHA record for Pioneer (mine ID 5100194). 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
Inspection activity
MSHA inspections since 2000
2
inspections on record
20
inspection hours
n/a
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.
Rate withheld: 20 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Ownership history
  1. M Sonomura Contracting Company Inc 1987 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2003 0
2002 1
2001 3
2000 2
Source: MSHA quarterly employment and production, updated weekly.

Pioneer sits in Hawaii County, Hawaii, where the Census mining category is 0.0% of county employment.

Local economic context
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.
Hawaii County, Hawaii · Population 203,684
0.0%
Mining share of county employment
$77,215
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
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
2003 Q2 0 0 0
2003 Q1 0 0 0
2002 Q4 0 0 0
2002 Q3 0 0 0
2002 Q2 0 0 0
2002 Q1 106 0 0 0.0
2001 Q4 348 0 0 0.0
2001 Q3 995 0 0 0.0
Show 6 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2001 Q2 236 0 0 0.0
2001 Q1 461 0 0 0.0
2000 Q4 0 0 0
2000 Q3 1,071 0 0 0.0
2000 Q2 746 0 0 0.0
2000 Q1 1,067 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.