Key Takeaway
RILLITO PLANT is a active facility mine producing Stone, located in Rillito, Pima County, AZ. It has 735 violations on record (143 S&S) and $176K in proposed penalties. Operated by CalPortland Company.
RILLITO PLANT
Operator: CalPortland Company
Controller: Taiheiyo Cement Corp
Location: Rillito, Pima County, AZ
Employees: 150
Recent Violations
View all 735 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 02/19/2026 | 56.12032 | Non-S&S | LowNegligence | $0 |
| 02/19/2026 | 56.12032 | Non-S&S | ModNegligence | $0 |
| 02/19/2026 | 56.4201(a)(1) | Non-S&S | LowNegligence | $0 |
| 02/19/2026 | 56.4201(a)(1) | Non-S&S | ModNegligence | $0 |
| 02/19/2026 | 56.12028 | Non-S&S | ModNegligence | $0 |
| 02/18/2026 | 56.12020 | Non-S&S | ModNegligence | $0 |
| 02/18/2026 | 56.4201(a)(1) | Non-S&S | LowNegligence | $0 |
| 06/26/2025 | 56.12028 | Non-S&S | LowNegligence | $313 |
| 06/25/2025 | 56.4104(b) | Non-S&S | LowNegligence | $151 |
| 06/25/2025 | 56.20003(a) | S&S | LowNegligence | $2,712 |
| 06/25/2025 | 56.4104(a) | Non-S&S | ModNegligence | $267 |
| 06/25/2025 | 56.14112(b) | S&S | LowNegligence | $883 |
| 03/07/2025 | 47.41(a) | Non-S&S | ModNegligence | $151 |
| 03/06/2025 | 56.12018 | Non-S&S | ModNegligence | $151 |
| 03/06/2025 | 56.4100 | Non-S&S | ModNegligence | $151 |
| 03/06/2025 | 56.4201(a)(2) | Non-S&S | ModNegligence | $151 |
| 03/06/2025 | 56.20003(a) | Non-S&S | ModNegligence | $504 |
| 03/06/2025 | 56.14207 | Non-S&S | ModNegligence | $504 |
| 03/06/2025 | 56.20003(a) | S&S | ModNegligence | $642 |
| 03/06/2025 | 56.20003(a) | S&S | LowNegligence | $288 |
Accidents & Injuries
View all 113 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 10/22/2025 | SLIP OR FALL OF PERSON | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 04/08/2025 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 143d restricted |
| 03/03/2025 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 98d restricted |
| 03/03/2025 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 117d restricted |
| 01/14/2025 | MACHINERY | DAYS RESTRICTED ACTIVITY ONLY | 75d restricted |
| 03/11/2024 | SLIP OR FALL OF PERSON | DYS AWY FRM WRK & RESTRCTD ACT | 91d lost, 15d restricted |
| 11/03/2023 | HANDLING OF MATERIALS | DAYS RESTRICTED ACTIVITY ONLY | 4d restricted |
| 12/15/2021 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 12/14/2020 | SLIP OR FALL OF PERSON | DAYS RESTRICTED ACTIVITY ONLY | 9d restricted |
| 06/12/2020 | HANDLING OF MATERIALS | DYS AWY FRM WRK & RESTRCTD ACT | 5d lost, 38d restricted |
Inspections
View all 92 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 02/17/2026 | 02/22/2026 | 74.50 | 2 |
| 06/23/2025 | 06/30/2025 | 61.25 | 3 |
| 05/12/2025 | 05/14/2025 | 9.00 | 1 |
| 03/04/2025 | 03/10/2025 | 67.75 | 2 |
| 06/28/2024 | 06/28/2024 | 4.00 | 1 |
| 06/24/2024 | 06/24/2024 | 8.00 | 1 |
| 05/13/2024 | 05/20/2024 | 45.75 | 3 |
| 12/03/2023 | 12/11/2023 | 42.00 | 1 |
| 04/11/2023 | 04/13/2023 | 58.50 | 2 |
| 02/22/2023 | 02/27/2023 | 22.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does RILLITO PLANT have?
RILLITO PLANT has 735 MSHA violations on record, of which 143 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $176K.
What type of mine is RILLITO PLANT?
RILLITO PLANT is a Facility mine producing Stone, located in Rillito, Pima County, AZ. It currently has 150 employees.
Has anyone been injured or killed at RILLITO PLANT?
According to MSHA records, RILLITO PLANT has 113 reported accident/injury records and 1 fatalities on file.
Who operates RILLITO PLANT?
RILLITO PLANT is operated by CalPortland Company and controlled by Taiheiyo Cement Corp. MSHA Mine ID: 0201138.