# Relationship history for MSHA mine 1512517

Current hierarchy: **Elmer  Jent → Jent & Franks Coal Company Inc → No 3**

- 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:** Newsome Donald → No 3; 1976-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Howell Corporation → No 3; 1977-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Melanie Coal Company Inc → No 3; 1980-09-01 to 1981-07-11; source msha-controller-operator-history
- **controller_controls_operator:** Newsome Donald → Melanie Coal Company Inc; 1980-09-01 to 1981-07-11; source msha-controller-operator-history
- **operator_operates_mine:** Lake Coal Company Inc → No 3; 1981-07-12 to 1981-09-23; source msha-controller-operator-history
- **controller_controls_operator:** Howell Corporation → Lake Coal Company Inc; 1981-07-12 to 1981-09-23; source msha-controller-operator-history
- **operator_operates_mine:** Quality Coal Company Inc → No 3; 1981-09-24 to 1983-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Caudill Forrester & Narce Et Al → No 3; 1981-09-24 to 1983-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Caudill Forrester & Narce Et Al → Quality Coal Company Inc; 1981-09-24 to 1983-05-08; source msha-controller-operator-history
- **operator_operates_mine:** Lake Coal Company Inc → No 3; 1983-05-09 to 1984-04-01; source msha-controller-operator-history
- **controller_controls_operator:** Howell Corporation → Lake Coal Company Inc; 1983-05-09 to 1984-04-01; source msha-controller-operator-history
- **operator_operates_mine:** Mc Dougal Enterprises Inc → No 3; 1984-04-02 to 1984-06-18; source msha-controller-operator-history
- **controller_controls_mine:** Mc Dougal Wayne → No 3; 1984-04-02 to 1984-06-18; source msha-controller-operator-history
- **controller_controls_operator:** Mc Dougal Wayne → Mc Dougal Enterprises Inc; 1984-04-02 to 1984-06-18; source msha-controller-operator-history
- **operator_operates_mine:** Lake Coal Company Inc → No 3; 1984-06-19 to 1984-06-20; source msha-controller-operator-history
- **controller_controls_operator:** Howell Corporation → Lake Coal Company Inc; 1984-06-19 to 1984-06-20; source msha-controller-operator-history
- **operator_operates_mine:** H & E Mining Company → No 3; 1984-06-21 to 1985-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Hurt Truman & Birchel Estep → No 3; 1984-06-21 to 1985-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Hurt Truman & Birchel Estep → H & E Mining Company; 1984-06-21 to 1985-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Elmer  Jent → No 3; 1984-06-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lake Coal Company Inc → No 3; 1985-07-23 to 1985-08-11; source msha-controller-operator-history
- **controller_controls_operator:** Howell Corporation → Lake Coal Company Inc; 1985-07-23 to 1985-08-11; source msha-controller-operator-history
- **operator_operates_mine:** Jent & Franks Coal Company Inc → No 3; 1985-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elmer  Jent → Jent & Franks Coal Company Inc; 1985-08-12 to current/open; source msha-controller-operator-history