Mining Incidents

Rocky Canyon Plant Metal/Non-Metal

Controlled by Taiheiyo Cement Corp
Atascadero, San Luis Obispo County, CA  ·  Active
MSHA Mine ID: 0404634

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Fatalities
0
Total incidents
5
Years on record
2006–2026
Latest incident
Jan 2026
Compliance record
MSHA citations since 2001
136
citations
29
significant & substantial
$41,238
proposed penalties
$41,238
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 5,219 0 0 0.0
2025 Q2 7,094 0 0 0.0
2025 Q1 6,420 1 0 155.8
2024 Q4 7,133 0 0 0.0
2024 Q3 6,378 4 0 627.2
2024 Q2 6,796 0 0 0.0
2023 Q4 7,177 0 0 0.0
2023 Q3 555 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

5 on file

2026 · 1 incident

January 16, 2026 CA · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Calportland Construction · Struck by... (Not Elsewhere Classified)

Employee's right hand was in the line of fire of a block and chain. The block and chain was under tension and shifted which struck employee's index finger. This resulted in a broken finger.

2023 · 1 incident

February 8, 2023 CA · Metal/Non-Metal dry screening plant operator, screen house operator HANDLING OF MATERIALS
Calportland Construction · Over-exertion in lifting objects

Operator was changing screens on the shaker deck in the morning and felt their back becoming inflamed from their body positioning. Employee was working through the pain operating the haul truck the remainder of the day when they noticed that the pain had become much worse. Was seen at clinic with a lower right back strain and right lumbar radiculopathy.

2020 · 1 incident

February 21, 2020 CA · Metal/Non-Metal miner, prospector, nec MACHINERY
Calportland Construction · Struck by flying object

Employee was performing grinding and welding on shaker on the lower plant repairing holes. Thought had dust in eyes. Later that evening approx. 1030pm the right eye became inflamed and EE went to ER and they found a slab of metal imbedded.

2011 · 1 incident

November 14, 2011 CA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Calportland Construction · Caught in, under or between (Not Elsewhere Classified)

Employee was disassembling a 30 HP water pump for inspection when he took off his gloves to remove the bolts, he then turned the impeller without gloves and lacerated his right index finger. The finger required 9 stitches.

2006 · 1 incident

October 18, 2006 CA · Metal/Non-Metal welder (shop) HANDTOOLS (NONPOWERED)
Union Asphalt Inc · Struck by... (Not Elsewhere Classified)

While hammering a piece of steel part flipped up hitting employee's mouth cutting lip.