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: 296 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
OLANCHA MILL has $270 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.
$270
proposed penalties
$270
current assessed
$270
paid to date
$0
outstanding
4 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2011-01-06.
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.
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: 2007-05-24, 19 years ago
0%
of limit-tested samples over the exposure limit
4
samples
4
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz4
Show the individual readings (4)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2007-05-24
Quartz, respirable, >1% Qtz
0.94
0.95
0.99
Bagging Operator
2003-03-10
Quartz, respirable, >1% Qtz
0.64
2.44
0.26
Bagging Operator
2002-11-06
Quartz, respirable, >1% Qtz
0.86
2.8
0.31
Bagging Operator
2000-08-16
Quartz, respirable, >1% Qtz
0.92
2.68
0.34
Bagging Operator
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2011
1
2010
1
2009
1
2008
1
2007
1
2006
1
2005
1
2004
1
2003
1
2002
2
2001
2
2000
2
Source: MSHA quarterly employment and production, updated weekly.
OLANCHA MILL sits in Inyo County, California, where the Census mining category is 1.7% 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.
Inyo County, California · Population 18,803
1.7%
Mining share of county employment
$72,432
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
2011 Q2
0
0
0
2011 Q1
350
1
0
2857.1
2010 Q4
295
0
0
0.0
2010 Q3
333
0
0
0.0
2010 Q2
324
0
0
0.0
2010 Q1
424
0
0
0.0
2009 Q4
512
0
0
0.0
2009 Q3
529
0
0
0.0
Show 38 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2009 Q2
521
0
0
0.0
2009 Q1
522
0
0
0.0
2008 Q4
602
0
0
0.0
2008 Q3
521
0
0
0.0
2008 Q2
636
0
0
0.0
2008 Q1
607
0
0
0.0
2007 Q4
627
0
0
0.0
2007 Q3
640
0
0
0.0
2007 Q2
621
0
0
0.0
2007 Q1
613
0
0
0.0
2006 Q4
723
0
0
0.0
2006 Q3
478
0
0
0.0
2006 Q2
640
1
0
1562.5
2006 Q1
605
0
0
0.0
2005 Q4
675
0
0
0.0
2005 Q3
646
0
0
0.0
2005 Q2
689
0
0
0.0
2005 Q1
592
0
0
0.0
2004 Q4
628
0
0
0.0
2004 Q3
694
0
0
0.0
2004 Q2
662
1
0
1510.6
2004 Q1
649
0
0
0.0
2003 Q4
642
0
0
0.0
2003 Q3
691
0
0
0.0
2003 Q2
696
0
0
0.0
2003 Q1
707
0
0
0.0
2002 Q4
643
1
0
1555.2
2002 Q3
1,024
0
0
0.0
2002 Q2
703
0
0
0.0
2002 Q1
587
0
0
0.0
2001 Q4
662
0
0
0.0
2001 Q3
825
0
0
0.0
2001 Q2
915
0
0
0.0
2001 Q1
975
0
0
0.0
2000 Q4
913
0
0
0.0
2000 Q3
982
1
0
1018.3
2000 Q2
1,026
0
0
0.0
2000 Q1
972
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
1 on file
1984 · 1 incident
January 17, 1984CA · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorMACHINERY
EMP WAS WORKING TO UNPLUG DUST FROM BAGGING MACHINE AND MOVED TO SIDE OF THE BAGGER HE STUCK HIS FINGERS UNDER THE GUARD TO MOVE THE V BELT TO SEE IF IT HAD FREE PLAY ANOTHER EMP THOUGHT HE WAS CLEAR OF THE BAGGER AND PUSHED THE START BUTTON ON ELECTRIC PANEL IN DOING SO THE BELT PULLED SUBJECTS FINGERS INTO THE PULLEY