# Relationship history for MSHA mine 4405151

Current hierarchy: **Bobby Joe  Hensley → B J'S Coal Sales Inc → Loadout Facility**

- 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:** New Ben Coals Ltd → Loadout Facility; 1978-05-01 to 1990-03-12; source msha-controller-operator-history
- **controller_controls_mine:** Sergent Ben → Loadout Facility; 1978-05-01 to 1990-03-12; source msha-controller-operator-history
- **controller_controls_operator:** Sergent Ben → New Ben Coals Ltd; 1978-05-01 to 1990-03-12; source msha-controller-operator-history
- **operator_operates_mine:** B J'S Coal Sales Inc → Loadout Facility; 1990-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bobby Joe  Hensley → Loadout Facility; 1990-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bobby Joe  Hensley → B J'S Coal Sales Inc; 1990-03-13 to current/open; source msha-controller-operator-history