Mining Incidents

Kellog Creek Aggregates Inc Metal/Non-Metal

Controlled by Sherri Mognaga
BYRON, Contra Costa County, CA  ·  Active
MSHA Mine ID: 0403622

Kellog Creek Aggregates Inc has $5K 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
0
Years on record
Latest incident
Compliance record
MSHA citations since 2000
36
citations
8
significant & substantial
$5,142
proposed penalties
$5,142
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
34
inspections on record
328
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: 328 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Kellog Creek Aggregates Inc has $5K 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.
$5K
proposed penalties
$5K
current assessed
$5K
paid to date
$0
outstanding
35 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-10-09.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
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 608 3 0 4934.2
2025 Q3 616 0 0 0.0
2025 Q2 604 0 0 0.0
2025 Q1 671 0 0 0.0
2024 Q4 601 0 0 0.0
2024 Q3 555 0 0 0.0
2024 Q2 577 0 0 0.0
2024 Q1 551 0 0 0.0
Show 62 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 587 0 0 0.0
2023 Q3 514 0 0 0.0
2023 Q2 486 0 0 0.0
2023 Q1 449 0 0 0.0
2022 Q4 390 0 0 0.0
2022 Q3 637 0 0 0.0
2022 Q2 588 0 0 0.0
2022 Q1 542 1 0 1845.0
2021 Q4 627 0 0 0.0
2021 Q3 596 0 0 0.0
2021 Q2 599 0 0 0.0
2021 Q1 554 1 0 1805.1
2020 Q4 600 0 0 0.0
2020 Q3 598 0 0 0.0
2020 Q2 573 0 0 0.0
2020 Q1 869 0 0 0.0
2019 Q4 896 3 1 3348.2
2019 Q3 998 0 0 0.0
2019 Q2 1,044 0 0 0.0
2019 Q1 843 0 0 0.0
2018 Q4 1,519 2 0 1316.7
2018 Q3 1,849 0 0 0.0
2018 Q2 2,111 0 0 0.0
2018 Q1 1,853 0 0 0.0
2017 Q4 1,560 0 0 0.0
2017 Q3 1,324 0 0 0.0
2017 Q2 987 0 0 0.0
2017 Q1 870 1 0 1149.4
2016 Q4 1,038 0 0 0.0
2016 Q3 1,322 0 0 0.0
2016 Q2 1,008 0 0 0.0
2016 Q1 781 1 0 1280.4
2015 Q3 992 0 0 0.0
2015 Q2 896 2 0 2232.1
2015 Q1 1,056 0 0 0.0
2014 Q4 1,407 1 0 710.7
2014 Q3 1,281 0 0 0.0
2014 Q2 1,063 1 0 940.7
2014 Q1 1,496 2 1 1336.9
2013 Q4 1,516 0 0 0.0
2013 Q3 1,525 0 0 0.0
2013 Q2 1,645 3 0 1823.7
2013 Q1 1,874 0 0 0.0
2012 Q4 1,744 0 0 0.0
2012 Q3 2,242 0 0 0.0
2012 Q2 1,905 0 0 0.0
2012 Q1 1,832 0 0 0.0
2011 Q4 2,926 5 2 1708.8
2011 Q3 2,377 0 0 0.0
2011 Q2 2,088 0 0 0.0
2011 Q1 922 0 0 0.0
2010 Q4 2,551 3 2 1176.0
2010 Q3 3,686 2 0 542.6
2010 Q2 1,429 0 0 0.0
2002 Q4 0 0 0
2002 Q3 0 0 0
2002 Q2 0 0 0
2001 Q2 0 0 0
2001 Q1 909 1 0 1100.1
2000 Q3 1,020 3 1 2941.2
2000 Q2 637 0 0 0.0
2000 Q1 315 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.

For insurers, brokers, and safety consultants

The full compliance file on Kellog Creek Aggregates Inc

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.