← Back to search

Red Rock #1 Plant Metal/Non-Metal

Red Rock Granite, Inc. · Surface

Controlled by Jack L Koss

Mosinee, WI, Marathon County, WI · Intermittent

MSHA Mine ID: 4703301

Watch this mine

Email me when a new MSHA incident is filed at Red Rock #1 Plant.

Fatalities: 0
Total incidents: 3
Years on record: 2004–2020
Latest incident: Aug 2020

Compliance record

MSHA citations since 2003

citations

significant & substantial

$4,198

proposed penalties

$4,198

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	3,166	0	0.0
2025 Q3	2,691	0	0.0
2025 Q2	2,770	0	0.0
2025 Q1	1,295	0	0.0
2024 Q4	3,770	3	795.8
2024 Q3	3,333	0	0.0
2024 Q2	3,458	0	0.0
2024 Q1	2,075	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

2020 · 1 incident

August 13, 2020 WI · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS

Red Rock Granite Inc. · Contact with hot objects or substances

Employee removed a radiator cap from a hot engine after being told the engine was hot and that a supervisor would trouble shoot. Employee was sprayed with coolant as a result of the failure to comply.

2009 · 1 incident

August 21, 2009 WI · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS

Red Rock Granite Inc. · Over-exertion in lifting objects

Put gear lab in rear, lifting or lowering oil jug. No lost work due to injury.

2004 · 1 incident

October 20, 2004 WI · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE

Red Rock Granite Inc. · Struck against a moving object

LOADER OPERATOR CARRYING CLAY TO BUILD CLAY BERM, WENT OVER EDGE & ROLLED LOADER DOWN BANK. HE HAD TIRES UNEVEN TO EDGE OF BANK & BUCKET UP IN AIR WHEN HE BEGAN TO DUMP, THE WEIGHT SHIFTED & CLAY GAVE WAY. LOADER ROLLED APPROX. 30'. OPERATOR WAS SORE BUT NOT SERIOUSLY HURT. LOADER HAS COSMETIC DAMAGE.