# Relationship history for MSHA mine 1514608

Current hierarchy: **Howell Corporation → Lake Coal Company Inc → Old House Branch No 9**

- 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:** Howell Corporation → Old House Branch No 9; 1977-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joseph Brothers Inc → Old House Branch No 9; 1978-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hogg Jim → Old House Branch No 9; 1983-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lake Coal Company Inc → Old House Branch No 9; 1984-04-01 to 1984-08-13; source msha-controller-operator-history
- **controller_controls_operator:** Howell Corporation → Lake Coal Company Inc; 1984-04-01 to 1984-08-13; source msha-controller-operator-history
- **operator_operates_mine:** Joseph Brothers Inc → Old House Branch No 9; 1984-08-14 to 1985-02-18; source msha-controller-operator-history
- **controller_controls_operator:** Joseph Brothers Inc → Joseph Brothers Inc; 1984-08-14 to 1985-02-18; source msha-controller-operator-history
- **operator_operates_mine:** Lake Coal Company Inc → Old House Branch No 9; 1985-02-19 to 1985-04-02; source msha-controller-operator-history
- **controller_controls_operator:** Howell Corporation → Lake Coal Company Inc; 1985-02-19 to 1985-04-02; source msha-controller-operator-history
- **operator_operates_mine:** Commerce Coal Company Inc → Old House Branch No 9; 1985-04-03 to 1985-09-08; source msha-controller-operator-history
- **controller_controls_operator:** Hogg Jim → Commerce Coal Company Inc; 1985-04-03 to 1985-09-08; source msha-controller-operator-history
- **operator_operates_mine:** Lake Coal Company Inc → Old House Branch No 9; 1985-09-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Howell Corporation → Lake Coal Company Inc; 1985-09-09 to current/open; source msha-controller-operator-history