# Relationship history for MSHA mine 1513732

Current hierarchy: **Cotton John → Whitehouse Inc → No 1**

- 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:** Ella Coal Inc → No 1; 1982-09-01 to 1985-10-01; source msha-controller-operator-history
- **controller_controls_mine:** Smith Alan S & Ella → No 1; 1982-09-01 to 1985-10-01; source msha-controller-operator-history
- **controller_controls_operator:** Smith Alan S & Ella → Ella Coal Inc; 1982-09-01 to 1985-10-01; source msha-controller-operator-history
- **operator_operates_mine:** Whitehouse Inc → No 1; 1985-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cotton John → No 1; 1985-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cotton John → Whitehouse Inc; 1985-10-02 to current/open; source msha-controller-operator-history