# Relationship history for MSHA mine 0301951

Current hierarchy: **Irene Amaya Bradshaw → Arkansas Gravel Co Inc → Bradshaw Mine**

- 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:** Irene  Bradshaw  et al → Bradshaw Mine; 2007-06-28 to 2022-12-27; source msha-controller-operator-history
- **operator_operates_mine:** Arkansas Gravel Co Inc → Bradshaw Mine; 2007-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Irene  Bradshaw  et al → Arkansas Gravel Co Inc; 2007-07-02 to 2022-12-27; source msha-controller-operator-history
- **controller_controls_operator:** Fredrick E  Bradshaw  et al → Arkansas Gravel Co Inc; 2007-07-02 to 2022-12-27; source msha-controller-operator-history
- **controller_controls_mine:** Irene Amaya Bradshaw → Bradshaw Mine; 2022-12-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Irene Amaya Bradshaw → Arkansas Gravel Co Inc; 2022-12-28 to current/open; source msha-controller-operator-history