8-K Item 1.04 Filings: Mine Safety Violations
Identify mine safety shutdowns, violation notices, and MSHA disclosures in this compliance list.
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| Form | Filer | Filing Agent | Date | Actions |
|---|---|---|---|---|
| 8-K | Nacco Industries Inc | 08/19/2026 | ||
| 8-K | Emcor Group, Inc. | 07/31/2026 | ||
| 8-K | Arcosa, Inc. | 07/15/2026 | ||
| 8-K | Hallador Energy Co | Toppan Merrill /FA | 06/03/2026 |
Mine Safety Violations Tracker: Reading 8-K Item 1.04 for Operational Risk
A mine safety violations tracker focused on Form 8-K Item 1.04 identifies specified mine-safety orders and notices received by public-company mine operators or subsidiaries. Analysts can use these disclosures to identify the affected mine, the type and date of the order or notice, and patterns of repeat activity that may signal operational, financial, or oversight risks.
The category is narrower than a general search for mining violations because Item 1.04 applies only to specific disclosure triggers under Form 8-K.
Why mine-level safety events can become financial signals
Mining economics depend heavily on operating continuity. A safety event can disrupt output, staffing, equipment use, remediation work, or shipments, while repeated events may raise concerns about maintenance, training, and management oversight.
Investors should connect the mine-level event to issuer-level exposure. Problems at a major mine may affect volumes, costs, customer commitments, or guidance, with later financial effects potentially appearing in results of operations disclosures.
What do 8-K mine safety filings cover?
The official Form 8-K instructions specify three trigger categories for Item 1.04 when received with respect to a covered mine operated by the registrant or a subsidiary: an imminent-danger order under section 107(a) of the Federal Mine Safety and Health Act, a written Mine Safety and Health Administration notice that the mine has a qualifying pattern of violations, or a written MSHA notice that the mine has the potential to have such a pattern. The report identifies the receipt date, category, and the mine’s name and location.
That limited data can still be analytically powerful when organized consistently.
| Filing signal | What to capture | Why it matters |
| Imminent-danger order | Receipt date, mine, location | Flags an acute safety intervention requiring immediate attention |
| Pattern notice | Mine identity and notice category | Signals sustained regulatory concern under the specified statutory framework |
| Potential-pattern notice | Timing and recurrence | May indicate a worsening compliance trajectory |
| Repeat issuer activity | Frequency across mines and periods | Supports comparisons of operating discipline and concentrated risk |
How analysts use MSHA notices and filing history
The research value increases when events are grouped by mine and issuer rather than read as isolated 8-Ks. Practical uses include:
- Build mine-level timelines of orders, notices, remediation updates, and operating consequences.
- Compare repeat activity across operators, basins, commodities, and individual assets while controlling for portfolio size and exposure.
- Test whether safety events precede production shortfalls, cost pressure, revised guidance, insurance issues, or management changes.
- Support counterparty, supplier, adviser, and lead-generation research by identifying issuers facing concentrated operational scrutiny.
Researchers should avoid converting the filing count into a simplistic safety ranking. Different companies operate different numbers and types of mines, and the severity, context, and operational consequences of events vary. The filing is an event signal; meaningful comparison requires scale, mine characteristics, production contribution, and the wider regulatory record.
Mine shutdown disclosures fit into a broader disclosure chain
A company may later provide operational context through the other events filings page if management deems a development important to security holders and it is not otherwise called for by Form 8-K. Depending on the facts, follow-on reporting can clarify remediation, restart timing, production effects, or other material developments.
The Regulation FD disclosures tracker can also matter when an issuer uses investor presentations or other Regulation FD communications to update the market. Comparing those materials with the initial safety report helps analysts test whether management’s public narrative changes as operational consequences become clearer.
Using SEC Filing Data to Track Mine-Safety Events
This Item 1.04 – Mine Safety – Shutdowns Violations tracker helps researchers identify affected issuers and mines, review Item 1.04 orders or notices, compare filing dates, and monitor repeat activity across operators and assets. Analysts can then use the results of operations and financial condition tracker to examine whether safety events are followed by production changes, higher costs, or revised financial expectations.
Final takeaway
A mine safety violations tracker helps convert a narrow regulatory disclosure into an operational-risk timeline. By linking the named mine, notice category, repeat events, production exposure, and later company updates, analysts can distinguish a one-off filing from a pattern that may have broader implications for cost, continuity, governance, and valuation.

