# Relationship history for MSHA mine 4605346

Current hierarchy: **Boothe Harold B & Danny R Reed → W B Swope Inc → Swope No 2**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Roy L  McCoy et al → Swope No 2; 1976-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Miracle Coal Company Inc → Swope No 2; 1976-11-11 to 1978-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Roy L  McCoy et al → Miracle Coal Company Inc; 1976-11-11 to 1978-04-30; source msha-controller-operator-history
- **operator_operates_mine:** W B Swope Inc → Swope No 2; 1978-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Boothe Harold B & Danny R Reed → Swope No 2; 1978-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Boothe Harold B & Danny R Reed → W B Swope Inc; 1978-05-01 to current/open; source msha-controller-operator-history