# Relationship history for MSHA mine 1514467

Current hierarchy: **Harvel Harvey → V & A Coal Company → No 1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Salmons Carlos → No 1; 1980-02-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & R Coal Company → No 1; 1984-02-01 to 1984-07-24; source msha-controller-operator-history
- **controller_controls_operator:** Salmons Carlos → C & R Coal Company; 1984-02-01 to 1984-07-24; source msha-controller-operator-history
- **operator_operates_mine:** V & A Coal Company → No 1; 1984-07-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Harvel Harvey → No 1; 1984-07-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harvel Harvey → V & A Coal Company; 1984-07-25 to current/open; source msha-controller-operator-history