# Relationship history for MSHA mine 3607771

Current hierarchy: **Felty Harold M → F & P Coal Company Inc → F & P Coal Company Inc-Reevesdale**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** F & P Coal Company Inc → F & P Coal Company Inc-Reevesdale; 1985-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Felty Harold M → F & P Coal Company Inc-Reevesdale; 1985-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Felty Harold M → F & P Coal Company Inc; 1985-12-01 to current/open; source msha-controller-operator-history