Mining Incidents

Mountain Lily Mine: 6 MSHA citations Metal/Non-Metal

RPL Mining Limited LLC · Underground
Controlled by William Larson
Sunshine Summit, San Diego County, CA  ·  Abandoned
MSHA Mine ID: 0405900

Mountain Lily Mine has $864 in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

Watch this mine

Email me when a new MSHA incident is filed at Mountain Lily Mine.

Fatalities
0
Total incidents
0
Years on record
Latest incident
Compliance record
MSHA citations since 2017
6
citations
1
significant & substantial
$864
proposed penalties
$864
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2015
15
inspections on record
222
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: 222 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Mountain Lily Mine has $864 in proposed MSHA penalties and $0 outstanding across 0 contested dockets.

Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$864
proposed penalties
$864
current assessed
$864
paid to date
$0
outstanding
6 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2018-03-21.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
16.7%
significant & substantial
0.0%
high negligence or reckless
16.7%
reasonably likely or greater
50.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 0.0% low, 100.0% moderate, 0.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Health sampling
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: 2018-08-22, 8 years ago
0%
of limit-tested samples over the exposure limit
3
samples
2
limit-tested
Most sampled contaminants
  • Arsenic dust1
  • Beryllium dust1
  • Cadmium dust & salts1
  • Chromium, soluble1
Show the individual readings (12)
Date Contaminant Concentration Limit Conc / limit Occupation
2018-08-22 Vanadium dust 0 500 0.00 Bobcat Operator
2018-08-22 Arsenic dust 0 500 0.00 Bobcat Operator
2018-08-22 Beryllium dust 0 2 0.00 Bobcat Operator
2018-08-22 Cadmium dust & salts 0 200 0.00 Bobcat Operator
2018-08-22 Chromium, soluble 0 500 0.00 Bobcat Operator
2018-08-22 Cobalt dust 0 100 0.00 Bobcat Operator
2018-08-22 Copper dust and mist 0 1 0.00 Bobcat Operator
2018-08-22 Lead, inorganic dust 0 150 0.00 Bobcat Operator
2018-08-22 Manganese dust 0 5 0.00 Bobcat Operator
2018-08-22 Molybdenum dust 0 10 0.00 Bobcat Operator
2018-08-22 Nickel dust & salts 0 1 0.00 Bobcat Operator
2017-06-07 Respirable dust, <.1mg 0 Miner, Drift

Area samples (mill and shop air)

Last sampled: 2018-08-22, 8 years ago
2
samples
Show the individual readings (11)
Date Contaminant Concentration Limit Conc / limit Area sampled
2018-08-22 Arsenic dust 0 UG TRAVEL/HAULAGE
2018-08-22 Beryllium dust 0 UG TRAVEL/HAULAGE
2018-08-22 Cadmium dust & salts 0 UG TRAVEL/HAULAGE
2018-08-22 Chromium, soluble 0 UG TRAVEL/HAULAGE
2018-08-22 Cobalt dust 0 UG TRAVEL/HAULAGE
2018-08-22 Copper dust and mist 0 UG TRAVEL/HAULAGE
2018-08-22 Lead, inorganic dust 0 UG TRAVEL/HAULAGE
2018-08-22 Manganese dust 0 UG TRAVEL/HAULAGE
2018-08-22 Molybdenum dust 0 UG TRAVEL/HAULAGE
2018-08-22 Nickel dust & salts 0 UG TRAVEL/HAULAGE
2018-08-22 Vanadium dust 0 UG TRAVEL/HAULAGE
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.
Ownership history
  1. RPL Mining Limited LLC 2015 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2018 2
2017 2
2016 2
2015 2
Source: MSHA quarterly employment and production, updated weekly.

Mountain Lily Mine sits in San Diego County, California, 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.
San Diego County, California · Population 3,282,782
0.0%
Mining share of county employment
$102,285
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
2018 Q4 546 0 0 0.0
2018 Q3 544 0 0 0.0
2018 Q2 621 0 0 0.0
2018 Q1 512 2 0 3906.2
2017 Q4 688 2 0 2907.0
2017 Q3 424 1 0 2358.5
2017 Q2 702 1 1 1424.5
2017 Q1 508 0 0 0.0
Show 7 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2016 Q4 560 0 0 0.0
2016 Q3 624 0 0 0.0
2016 Q2 584 0 0 0.0
2016 Q1 563 0 0 0.0
2015 Q4 628 0 0 0.0
2015 Q3 584 0 0 0.0
2015 Q2 112 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.