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: 123 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Boron has $9K in proposed MSHA penalties and $327 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.
$9K
proposed penalties
$9K
current assessed
$9K
paid to date
$327
outstanding
39 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2008-05-30.
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: 2006-06-21, 20 years ago
0%
of limit-tested samples over the exposure limit
3
samples
1
limit-tested
Most sampled contaminants
Unlisted Particulate, respirable, <1% Qtz2
Quartz, respirable, >1% Qtz1
Show the individual readings (3)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2006-06-21
Unlisted Particulate, respirable, <1% Qtz
1.67
Crusher Oper/Worker
2006-06-21
Unlisted Particulate, respirable, <1% Qtz
0.48
Crusher Oper/Worker
2006-06-21
Quartz, respirable, >1% Qtz
0.87
2.62
0.33
Crusher Oper/Worker
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.
Boron recorded 7.63 reportable injury cases per 100 full-time workers in 2007.
Injury rate, 2007
ⓘ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.
7.63
total case rate
7.63
days-away rate
0.000
fatality rate
Above average. The US metal and nonmetal mining average was 3.30 and the all-US-mining average was 3.77 cases per 100 workers.
In California, metal and nonmetal mining averaged 3.87 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
2007 *
7.63
7.63
0.000
2006 *
4.50
4.50
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2008
9
2007
15
2006
17
Source: MSHA quarterly employment and production, updated weekly.
Boron sits in Kern County, California, where the Census mining category is 2.3% 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.
Kern County, California · Population 910,433
2.3%
Mining share of county employment
$67,660
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
2008 Q2
2,474
1
0
404.2
2008 Q1
5,740
19
10
3310.1
2007 Q4
10,860
0
0
0.0
2007 Q3
14,180
6
0
423.1
2007 Q2
15,184
0
0
0.0
2007 Q1
12,168
0
0
0.0
2006 Q4
16,000
5
0
312.5
2006 Q3
9,594
0
0
0.0
Show 2 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2006 Q2
10,973
7
0
637.9
2006 Q1
7,876
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
3 on file
2007 · 2 incidents
August 17, 2007CA · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerSLIP OR FALL OF PERSON
While getting off the CAT D9 dozer, employee slipped off and hit his right hand on the tracks. It was Friday, he did not think it was bad. His right hand swelled over the weekend. He reported it Monday at noon.
July 13, 2007CA · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanSLIP OR FALL OF PERSON
Miner was exiting out of fuel island storage area as he had done many times before. Left knee strained and went out from him and he fell on his bottom. Surface area was/is clean dry clutter free and clear visability outside were he fell. Left knee has been weak from a 20 year ago injury. Miner was wearing his support brace on left knee at the time of the fall.