# Relationship history for MSHA mine 1515380

Current hierarchy: **Parsons Loyall-Dale → W & P Coal Company Inc → Mine No 3**

- 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

- **operator_operates_mine:** B & B Coal Company → Mine No 3; 1985-09-01 to 1987-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Breeding Bennett & Bobby → Mine No 3; 1985-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Breeding Bennett & Bobby → B & B Coal Company; 1985-09-01 to 1987-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Parsons Loyall-Dale Et Al → Mine No 3; 1985-09-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rlg Inc → Mine No 3; 1987-09-02 to 1987-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Roberts Thomas W Et Al → Mine No 3; 1987-09-02 to 1987-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Roberts Thomas W Et Al → Rlg Inc; 1987-09-02 to 1987-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Rlg Inc → Mine No 3; 1987-12-01 to 1988-08-18; source msha-controller-operator-history
- **controller_controls_mine:** Roberts Orlis W → Mine No 3; 1987-12-01 to 1988-08-18; source msha-controller-operator-history
- **controller_controls_operator:** Roberts Orlis W → Rlg Inc; 1987-12-01 to 1988-08-18; source msha-controller-operator-history
- **operator_operates_mine:** W & P Coal Company Inc → Mine No 3; 1988-08-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Parsons Loyall-Dale Et Al → W & P Coal Company Inc; 1988-08-19 to current/open; source msha-controller-operator-history