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WILLAMETTE PORTABLE #1 Metal/Non-Metal

Knife River Corporation-Northwest · Surface

Controlled by Knife River Corporation

Seaside, Clatsop County, OR · Intermittent

MSHA Mine ID: 3503321

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Email me when a new MSHA incident is filed at WILLAMETTE PORTABLE #1.

Fatalities: 0
Total incidents: 2
Years on record: 2004–2007
Latest incident: Jun 2007

Compliance record

MSHA citations since 2000

citations

significant & substantial

$21,124

proposed penalties

$10,613

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	Per 1M hrs
2025 Q4	1,079	2	1853.6
2025 Q2	0	0
2025 Q1	234	0	0.0
2024 Q3	2,524	0	0.0
2024 Q2	3,943	0	0.0
2024 Q1	361	1	2770.1
2023 Q4	312	0	0.0
2023 Q3	2,223	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

2 on file

2007 · 1 incident

June 4, 2007 OR · Metal/Non-Metal blaster, shooter, shotfirer, explosive worker, powder gang/monkey HANDLING OF MATERIALS

Knife River Corporation-Northwest · Over-exertion (Not Elsewhere Classified)

Employee was loading holes, he reached out to his right, to grab a 50# bag of ANFO and felt a sharp pain in his lower back. He strained his lower back.

2004 · 1 incident

March 2, 2004 OR · Metal/Non-Metal superintendent HANDLING OF MATERIALS

Knife River Corporation-Northwest · Over-exertion (Not Elsewhere Classified)

EE was standing still and then bent over and twisted to take a measurement off of a piece of equipment, heard a loud pop and was then in severe pain in his lower back.