# Relationship history for MSHA mine 1510958

Current hierarchy: **Shumate Ford Jr → Justmore Coal Company Inc → Dorton Dock**

- 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:** Appelman John R → Dorton Dock; 1975-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hilltop Energy Corp → Dorton Dock; 1977-11-01 to 1980-06-24; source msha-controller-operator-history
- **controller_controls_operator:** Appelman John R → Hilltop Energy Corp; 1977-11-01 to 1980-06-24; source msha-controller-operator-history
- **controller_controls_mine:** Daniel Paul E → Dorton Dock; 1980-01-01 to 1981-07-12; source msha-controller-operator-history
- **operator_operates_mine:** Daniel Mountain Energies Inc → Dorton Dock; 1980-06-25 to 1981-06-08; source msha-controller-operator-history
- **controller_controls_operator:** Daniel Paul E → Daniel Mountain Energies Inc; 1980-06-25 to 1981-06-08; source msha-controller-operator-history
- **operator_operates_mine:** Hilltop Energy Inc → Dorton Dock; 1981-06-09 to 1983-03-28; source msha-controller-operator-history
- **controller_controls_mine:** United  Company → Dorton Dock; 1981-06-09 to 1983-03-28; source msha-controller-operator-history
- **controller_controls_operator:** United  Company → Hilltop Energy Inc; 1981-06-09 to 1983-03-28; source msha-controller-operator-history
- **operator_operates_mine:** Lawson Coal Sales Inc → Dorton Dock; 1983-03-29 to 1984-08-02; source msha-controller-operator-history
- **controller_controls_mine:** Lawson Robert G Et Al → Dorton Dock; 1983-03-29 to 1984-08-02; source msha-controller-operator-history
- **controller_controls_operator:** Lawson Robert G Et Al → Lawson Coal Sales Inc; 1983-03-29 to 1984-08-02; source msha-controller-operator-history
- **operator_operates_mine:** Justmore Coal Company Inc → Dorton Dock; 1984-08-03 to 1986-04-10; source msha-controller-operator-history
- **controller_controls_mine:** Justice Perry A → Dorton Dock; 1984-08-03 to 1986-04-10; source msha-controller-operator-history
- **controller_controls_operator:** Justice Perry A → Justmore Coal Company Inc; 1984-08-03 to 1986-04-10; source msha-controller-operator-history
- **operator_operates_mine:** Justmore Coal Company Inc → Dorton Dock; 1986-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Shumate Ford Jr → Dorton Dock; 1986-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shumate Ford Jr → Justmore Coal Company Inc; 1986-04-11 to current/open; source msha-controller-operator-history