# Relationship history for MSHA mine 0301886

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

- **operator_operates_mine:** South Arkansas Gravel Company Inc → Wylie Mine; 2004-02-01 to 2007-06-27; source msha-controller-operator-history
- **controller_controls_mine:** Mike  Blann Et Al → Wylie Mine; 2004-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Blann Et Al → South Arkansas Gravel Company Inc; 2004-02-01 to 2007-06-27; source msha-controller-operator-history
- **controller_controls_operator:** Fredrick E  Bradshaw Et Al → South Arkansas Gravel Company Inc; 2004-02-01 to 2007-06-27; source msha-controller-operator-history
- **operator_operates_mine:** Arkansas Gravel Co Inc → Wylie Mine; 2007-06-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fredrick E  Bradshaw  et al → Wylie Mine; 2007-06-28 to 2022-12-27; source msha-controller-operator-history
- **controller_controls_operator:** Fredrick E  Bradshaw  et al → Arkansas Gravel Co Inc; 2007-06-28 to 2022-12-27; source msha-controller-operator-history
- **controller_controls_operator:** Irene  Bradshaw  et al → Arkansas Gravel Co Inc; 2007-06-28 to 2022-12-27; source msha-controller-operator-history
- **controller_controls_mine:** Irene Amaya Bradshaw → Wylie 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