# Relationship history for MSHA mine 1513513

Current hierarchy: **Scalf Wallace → Circle J Coal Company Inc → No 1 Mine (D)**

- 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:** Slone Roger & Robert → No 1 Mine (D); 1980-10-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Flat Fork Coal Company Inc → No 1 Mine (D); 1982-05-01 to 1982-10-25; source msha-controller-operator-history
- **controller_controls_operator:** Slone Roger & Robert → Flat Fork Coal Company Inc; 1982-05-01 to 1982-10-25; source msha-controller-operator-history
- **operator_operates_mine:** Brite Energy Inc → No 1 Mine (D); 1982-10-26 to 1983-04-05; source msha-controller-operator-history
- **controller_controls_mine:** Damron Roger → No 1 Mine (D); 1982-10-26 to 1983-04-05; source msha-controller-operator-history
- **controller_controls_operator:** Damron Roger → Brite Energy Inc; 1982-10-26 to 1983-04-05; source msha-controller-operator-history
- **operator_operates_mine:** Hamilton & Mitchell Coal Company Inc → No 1 Mine (D); 1983-04-06 to 1983-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Mitchell Willie → No 1 Mine (D); 1983-04-06 to 1983-09-01; source msha-controller-operator-history
- **controller_controls_operator:** Mitchell Willie → Hamilton & Mitchell Coal Company Inc; 1983-04-06 to 1983-09-01; source msha-controller-operator-history
- **operator_operates_mine:** Circle J Coal Company Inc → No 1 Mine (D); 1983-09-02 to 1984-02-20; source msha-controller-operator-history
- **controller_controls_mine:** Davidson Michael D → No 1 Mine (D); 1983-09-02 to 1984-02-20; source msha-controller-operator-history
- **controller_controls_operator:** Davidson Michael D → Circle J Coal Company Inc; 1983-09-02 to 1984-02-20; source msha-controller-operator-history
- **operator_operates_mine:** Circle J Coal Company Inc → No 1 Mine (D); 1984-02-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scalf Wallace → No 1 Mine (D); 1984-02-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scalf Wallace → Circle J Coal Company Inc; 1984-02-21 to current/open; source msha-controller-operator-history