Mayer Onyx Metal/Non-Metal
Stoneworld Co.
· Surface
Controlled by
Ray Bosiljcic; Liliana Bosiljcic
Mayer,
Yavapai County,
AZ
·
Active
MSHA Mine ID: 0202987
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- Fatalities
- 0
- Total incidents
- 0
- Years on record
- —
- Latest incident
- —
Compliance record
MSHA citations since 2004
116
citations
40
significant & substantial
$61,777
proposed penalties
$59,093
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 | 2,544 | 0 | 0 | 0.0 |
| 2025 Q3 | 2,880 | 0 | 0 | 0.0 |
| 2025 Q2 | 2,736 | 0 | 0 | 0.0 |
| 2025 Q1 | 2,784 | 2 | 1 | 718.4 |
| 2024 Q4 | 3,136 | 0 | 0 | 0.0 |
| 2024 Q3 | 3,456 | 0 | 0 | 0.0 |
| 2024 Q2 | 4,160 | 1 | 0 | 240.4 |
| 2024 Q1 | 3,648 | 1 | 0 | 274.1 |
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No reportable incidents on file.
MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.