SELF-EMPLOYED TRUCK DRIVER WAS STANDING A SCALE. I OBSERVED HIM STANDING THEN LOOKED AWAY ABOUT 20 SECS LATER I LOOKED BACK AND HE WAS FACE DOWN LYING ON SCALE. NO SIGNS OF WHAT HAPPENED TO HI M OR WHAT CAUSED HIM TO FALL. LOADER OPERATOR SAID HE APPEARED PALE WHEN HE LOADED HIM EARLIER.
Langley Hill Quarry Metal/Non-Metal
Langley Hill Quarry
· Surface
Controlled by
Michael W Dempsey; Patrick K Dempsey
WOODSIDE,
San Mateo County,
CA
·
Active
MSHA Mine ID: 0400170
Langley Hill Quarry has $10K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.
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Email me when a new MSHA incident is filed at Langley Hill Quarry.
- Fatalities
- 1
- Total incidents
- 1
- Years on record
- 1998
- Latest incident
- Mar 1998
Compliance record
MSHA citations since 2000
84
citations
21
significant & substantial
$9,855
proposed penalties
$9,855
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
64
inspections on record
713
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: 713 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Langley Hill Quarry has $10K 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.$10K
proposed penalties
$10K
current assessed
$10K
paid to date
$0
outstanding
83 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-10-29.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
See also
the operator's enforcement record
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 |
|---|---|---|---|---|
| 2025 Q4 | 1,224 | 2 | 0 | 1634.0 |
| 2025 Q3 | 1,154 | 0 | 0 | 0.0 |
| 2025 Q2 | 1,252 | 0 | 0 | 0.0 |
| 2025 Q1 | 1,084 | 3 | 0 | 2767.5 |
| 2024 Q4 | 1,116 | 0 | 0 | 0.0 |
| 2024 Q3 | 1,060 | 0 | 0 | 0.0 |
| 2024 Q2 | 1,280 | 0 | 0 | 0.0 |
| 2023 Q4 | 1,234 | 0 | 0 | 0.0 |
Show 95 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2023 Q3 | 1,240 | 2 | 0 | 1612.9 |
| 2023 Q2 | 1,152 | 0 | 0 | 0.0 |
| 2023 Q1 | 1,040 | 1 | 0 | 961.5 |
| 2022 Q4 | 1,112 | 0 | 0 | 0.0 |
| 2022 Q3 | 1,044 | 0 | 0 | 0.0 |
| 2022 Q2 | 1,304 | 0 | 0 | 0.0 |
| 2022 Q1 | 1,136 | 0 | 0 | 0.0 |
| 2021 Q4 | 1,152 | 0 | 0 | 0.0 |
| 2021 Q3 | 1,188 | 0 | 0 | 0.0 |
| 2021 Q2 | 1,380 | 0 | 0 | 0.0 |
| 2021 Q1 | 1,220 | 0 | 0 | 0.0 |
| 2020 Q4 | 1,144 | 0 | 0 | 0.0 |
| 2020 Q3 | 1,684 | 1 | 0 | 593.8 |
| 2020 Q2 | 1,680 | 0 | 0 | 0.0 |
| 2020 Q1 | 1,556 | 0 | 0 | 0.0 |
| 2019 Q4 | 1,277 | 1 | 0 | 783.1 |
| 2019 Q3 | 1,748 | 0 | 0 | 0.0 |
| 2019 Q2 | 1,792 | 0 | 0 | 0.0 |
| 2019 Q1 | 1,680 | 2 | 1 | 1190.5 |
| 2018 Q4 | 1,626 | 0 | 0 | 0.0 |
| 2018 Q3 | 1,696 | 0 | 0 | 0.0 |
| 2018 Q2 | 1,820 | 0 | 0 | 0.0 |
| 2018 Q1 | 1,761 | 2 | 0 | 1135.7 |
| 2017 Q4 | 1,708 | 0 | 0 | 0.0 |
| 2017 Q3 | 1,800 | 0 | 0 | 0.0 |
| 2017 Q2 | 1,796 | 1 | 0 | 556.8 |
| 2017 Q1 | 1,697 | 6 | 2 | 3535.7 |
| 2016 Q4 | 1,432 | 0 | 0 | 0.0 |
| 2016 Q3 | 1,680 | 0 | 0 | 0.0 |
| 2016 Q2 | 1,700 | 2 | 0 | 1176.5 |
| 2016 Q1 | 1,792 | 0 | 0 | 0.0 |
| 2015 Q4 | 1,652 | 0 | 0 | 0.0 |
| 2015 Q3 | 1,764 | 0 | 0 | 0.0 |
| 2015 Q2 | 1,638 | 0 | 0 | 0.0 |
| 2015 Q1 | 1,728 | 0 | 0 | 0.0 |
| 2014 Q4 | 1,596 | 0 | 0 | 0.0 |
| 2014 Q3 | 1,752 | 1 | 0 | 570.8 |
| 2014 Q2 | 1,752 | 0 | 0 | 0.0 |
| 2014 Q1 | 1,688 | 1 | 0 | 592.4 |
| 2013 Q4 | 1,632 | 0 | 0 | 0.0 |
| 2013 Q3 | 1,688 | 1 | 0 | 592.4 |
| 2013 Q2 | 1,484 | 0 | 0 | 0.0 |
| 2013 Q1 | 1,432 | 2 | 0 | 1396.6 |
| 2012 Q4 | 1,232 | 0 | 0 | 0.0 |
| 2012 Q3 | 1,488 | 5 | 2 | 3360.2 |
| 2012 Q2 | 1,640 | 0 | 0 | 0.0 |
| 2012 Q1 | 1,600 | 0 | 0 | 0.0 |
| 2011 Q4 | 1,472 | 4 | 0 | 2717.4 |
| 2011 Q3 | 1,650 | 0 | 0 | 0.0 |
| 2011 Q2 | 1,624 | 1 | 0 | 615.8 |
| 2011 Q1 | 1,646 | 3 | 1 | 1822.6 |
| 2010 Q4 | 1,482 | 0 | 0 | 0.0 |
| 2010 Q3 | 1,680 | 0 | 0 | 0.0 |
| 2010 Q2 | 1,680 | 3 | 1 | 1785.7 |
| 2010 Q1 | 1,646 | 0 | 0 | 0.0 |
| 2009 Q4 | 1,400 | 2 | 1 | 1428.6 |
| 2009 Q3 | 1,680 | 0 | 0 | 0.0 |
| 2009 Q2 | 1,680 | 0 | 0 | 0.0 |
| 2009 Q1 | 1,606 | 1 | 0 | 622.7 |
| 2008 Q4 | 1,300 | 4 | 1 | 3076.9 |
| 2008 Q3 | 1,680 | 0 | 0 | 0.0 |
| 2008 Q2 | 1,654 | 1 | 0 | 604.6 |
| 2008 Q1 | 1,680 | 0 | 0 | 0.0 |
| 2007 Q4 | 1,280 | 0 | 0 | 0.0 |
| 2007 Q3 | 1,680 | 1 | 0 | 595.2 |
| 2007 Q2 | 1,680 | 0 | 0 | 0.0 |
| 2007 Q1 | 1,680 | 0 | 0 | 0.0 |
| 2006 Q4 | 1,540 | 1 | 0 | 649.4 |
| 2006 Q3 | 1,632 | 0 | 0 | 0.0 |
| 2006 Q2 | 1,616 | 1 | 0 | 618.8 |
| 2006 Q1 | 1,680 | 6 | 2 | 3571.4 |
| 2005 Q4 | 1,484 | 0 | 0 | 0.0 |
| 2005 Q3 | 1,680 | 0 | 0 | 0.0 |
| 2005 Q2 | 1,680 | 1 | 0 | 595.2 |
| 2005 Q1 | 1,680 | 0 | 0 | 0.0 |
| 2004 Q4 | 1,400 | 0 | 0 | 0.0 |
| 2004 Q3 | 1,400 | 0 | 0 | 0.0 |
| 2004 Q2 | 1,680 | 1 | 0 | 595.2 |
| 2004 Q1 | 1,680 | 0 | 0 | 0.0 |
| 2003 Q4 | 1,400 | 0 | 0 | 0.0 |
| 2003 Q3 | 1,620 | 0 | 0 | 0.0 |
| 2003 Q2 | 1,680 | 0 | 0 | 0.0 |
| 2003 Q1 | 1,680 | 6 | 1 | 3571.4 |
| 2002 Q4 | 1,400 | 8 | 7 | 5714.3 |
| 2002 Q3 | 1,680 | 2 | 0 | 1190.5 |
| 2002 Q2 | 1,680 | 0 | 0 | 0.0 |
| 2002 Q1 | 1,680 | 3 | 1 | 1785.7 |
| 2001 Q4 | 1,400 | 0 | 0 | 0.0 |
| 2001 Q3 | 1,680 | 0 | 0 | 0.0 |
| 2001 Q2 | 1,680 | 0 | 0 | 0.0 |
| 2001 Q1 | 1,680 | 0 | 0 | 0.0 |
| 2000 Q4 | 2,100 | 0 | 0 | 0.0 |
| 2000 Q3 | 1,620 | 1 | 1 | 617.3 |
| 2000 Q2 | 1,520 | 0 | 0 | 0.0 |
| 2000 Q1 | 1,620 | 0 | 0 | 0.0 |
Fatalities at this mine
1 recorded
March 12, 1998
CA · Metal/Non-Metal
haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver
Fatality · SLIP OR FALL OF PERSON
Langley Hill Quarry · Fall from machine
For insurers, brokers, and safety consultants
The full compliance file on Langley Hill Quarry
A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.