Mining Incidents

Sumner Pit And Plant Metal/Non-Metal

Controlled by Heidelberg Materials AG
Sumner, Pierce County, WA  ·  Active
MSHA Mine ID: 4500705

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Fatalities
0
Total incidents
3
Years on record
2020–2025
Latest incident
Jul 2025
Compliance record
MSHA citations since 2010
72
citations
12
significant & substantial
$24,336
proposed penalties
$22,605
paid to date
Source: MSHA violations data, updated weekly.
Quarterly safety rates
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2025 Q4 8,769 7 1 798.3
2025 Q3 1,218 1 0 821.0
2025 Q2 8,527 0 0 0.0
2024 Q2 528 3 0 5681.8
2024 Q1 10,473 2 0 191.0
2023 Q4 9,084 0 0 0.0
2023 Q3 10,809 1 0 92.5
2023 Q2 10,089 0 0 0.0
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

3 on file

2025 · 1 incident

July 14, 2025 WA · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Corliss Resources, LLC · Struck against a moving object

Operator was hauling mud in a 980H loader when EE hit a bump in the haul road and received a possible pinched nerve in EE's neck. EE is seeing a physical therapist for pain relief. No time lost, no light duty restrictions, still working job of injury.

2022 · 1 incident

January 25, 2022 WA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
Corliss Resources, LLC · Fall from machine

Employee fell from approx 35 feet height despite area being surrounded by guardrails.

2020 · 1 incident

September 29, 2020 WA · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Corliss Resources, LLC · Struck by falling object

Employees where changing cloth on Mud Press. The mud press plate dropped on IE's left hand.