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Portable Plant #6 Metal/Non-Metal

Cornejo & Sons, LLC · Surface

Controlled by Summit Materials LLC

Buffalo, Wilson County, KS · Active

MSHA Mine ID: 1401828

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Email me when a new MSHA incident is filed at Portable Plant #6.

Fatalities: 0
Total incidents: 1
Years on record: 2026
Latest incident: Mar 2026

Compliance record

MSHA citations since 2022

citations

significant & substantial

$3,210

proposed penalties

$3,210

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	6,552	1	1	152.6
2025 Q3	21	2	0	95238.1
2025 Q2	4,692	0	0	0.0
2024 Q3	4,765	0	0	0.0
2024 Q2	729	2	0	2743.5
2024 Q1	1,863	0	0	0.0
2023 Q4	1,798	0	0	0.0
2023 Q3	2,627	1	1	380.7

Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.

No fatalities recorded at this mine.

Reportable incidents

1 on file

2026 · 1 incident

March 24, 2026 KS · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS

Cornejo & Sons, LLC · Over-exertion (Not Elsewhere Classified)

Employee was running through the plant area and felt a pop in EE's left hamstring area. Injury is believed to be a strained or pulled hamstring.