---
schema_version: "secwatch.filing_event.v1"
accession: "0000789933-23-000061"
form_type: "8-K"
ticker: "NC"
cik: "0000789933"
company_name: "NACCO INDUSTRIES INC"
filed_at: "2023-12-20T23:59:59+00:00"
generated_at: "2026-06-07T10:16:02.620631+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# NACCO subsidiary receives force majeure notice from power plant customer due to outage

## Summary
- MLMC received force majeure notice from Choctaw Generation LP for unplanned outage at Red Hills Power Plant starting Dec 15, 2023.
- No timeline for resolution; MLMC is exclusive lignite supplier to Red Hills.
- A prolonged outage would have a significant impact on NACCO's 2024 results.

## SEC filing metadata
- accession: 0000789933-23-000061
- form_type: 8-K
- ticker: NC
- cik: 0000789933
- company_name: NACCO INDUSTRIES INC
- filed_at: 2023-12-20T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/789933/000078993323000061/0000789933-23-000061-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/789933/000078993323000061/nacco-20231218.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000789933-23-000061
- JSON: https://secwatch.observer/filing/0000789933-23-000061.json
- Plain text: https://secwatch.observer/filing/0000789933-23-000061.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.