Del Sur Ridge Quarry has $1K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
3
Years on record
1992–1994
Latest incident
Feb 1994
Compliance record
MSHA citations since 2000
7
citations
3
significant & substantial
$1,220
proposed penalties
$1,220
paid to date
100% of proposed penalties paid to date, a $0 gap.
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: 225 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Del Sur Ridge Quarry has $1K 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.
$1K
proposed penalties
$1K
current assessed
$1K
paid to date
$0
outstanding
7 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2007-11-06.
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: 2005-04-13, 21 years ago
0%
of limit-tested samples over the exposure limit
3
samples
3
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz3
Show the individual readings (3)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2005-04-13
Quartz, respirable, >1% Qtz
0.15
0.55
0.27
Laborer, Bullgang
2005-04-13
Quartz, respirable, >1% Qtz
0.13
0.6
0.22
Bulldozer Operator
2005-04-13
Quartz, respirable, >1% Qtz
0.17
0.54
0.31
Laborer, Bullgang
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
2008
3
2007
4
2006
6
2005
6
2004
5
2003
4
2002
4
2001
5
2000
7
Source: MSHA quarterly employment and production, updated weekly.
Del Sur Ridge Quarry sits in Los Angeles 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.
Los Angeles County, California · Population 9,848,406
0.0%
Mining share of county employment
$87,760
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 Q3
0
0
0
2008 Q2
736
0
0
0.0
2008 Q1
1,024
0
0
0.0
2007 Q4
1,442
3
1
2080.4
2007 Q3
1,144
0
0
0.0
2007 Q2
1,380
0
0
0.0
2007 Q1
1,200
0
0
0.0
2006 Q4
1,656
0
0
0.0
Show 27 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2006 Q3
5,592
0
0
0.0
2006 Q2
1,432
0
0
0.0
2006 Q1
1,500
0
0
0.0
2005 Q4
4,809
0
0
0.0
2005 Q3
652
0
0
0.0
2005 Q2
868
2
0
2304.1
2005 Q1
546
0
0
0.0
2004 Q4
687
0
0
0.0
2004 Q3
1,004
0
0
0.0
2004 Q2
990
0
0
0.0
2004 Q1
802
0
0
0.0
2003 Q4
666
0
0
0.0
2003 Q3
771
0
0
0.0
2003 Q2
758
0
0
0.0
2003 Q1
588
0
0
0.0
2002 Q4
674
0
0
0.0
2002 Q3
848
0
0
0.0
2002 Q2
117
0
0
0.0
2002 Q1
325
0
0
0.0
2001 Q4
424
0
0
0.0
2001 Q3
960
0
0
0.0
2001 Q2
420
0
0
0.0
2001 Q1
633
0
0
0.0
2000 Q4
924
0
0
0.0
2000 Q3
924
2
2
2164.5
2000 Q2
5,167
0
0
0.0
2000 Q1
728
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
3 on file
1994 · 1 incident
February 16, 1994CA · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerHANDLING OF MATERIALS
NOT WEARING ANY BACK SUIPPORT EMPLOYEE ATTEMPTED TO ROLL A LARGE ROCK TO HELP SOME OTHER MEN. IT WAS TO HEAVY & HE EXPERIENCED PAIN BUT CONTINUED WORKING THAT DAY. SEVERAL DAYS LATER HE HAD TO SEE A DOCTOR FOR BACK PAIN.
INJURY OCCURRED BECAUSE EMPLOYEE WAS LIFTING SLAB WITH MUCH TALLER MAN. SHORT MAN LOST HIS GRIP ON STONE. IT FELL AGAINST HIS UPPER ARM CUTTING A DEEP GASH REQUIRING STITCHES.