# Relationship history for MSHA mine 1513416

Current hierarchy: **Hogg Jim → Commerce Coal Company Inc → No 2**

- 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

- **controller_controls_mine:** Howell Corporation → No 2; 1977-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tolby Branch Mining Company → No 2; 1982-03-01 to 1983-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Whitaker Ova → No 2; 1982-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Whitaker Ova → Tolby Branch Mining Company; 1982-03-01 to 1983-05-08; source msha-controller-operator-history
- **operator_operates_mine:** Lake Coal Company Inc → No 2; 1983-05-09 to 1984-01-19; source msha-controller-operator-history
- **controller_controls_operator:** Howell Corporation → Lake Coal Company Inc; 1983-05-09 to 1984-01-19; source msha-controller-operator-history
- **controller_controls_mine:** Hogg Jim → No 2; 1983-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Whitaker Investments Inc → No 2; 1984-01-20 to 1985-10-06; source msha-controller-operator-history
- **controller_controls_mine:** Whitaker Ova → No 2; 1984-01-20 to 1985-10-06; source msha-controller-operator-history
- **controller_controls_operator:** Whitaker Ova → Whitaker Investments Inc; 1984-01-20 to 1985-10-06; source msha-controller-operator-history
- **operator_operates_mine:** Commerce Coal Company Inc → No 2; 1985-10-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hogg Jim → Commerce Coal Company Inc; 1985-10-07 to current/open; source msha-controller-operator-history