# Relationship history for MSHA mine 4404837

Current hierarchy: **Enneper Ewald Eberhard → New Life Energy Inc → Mine #1**

- 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:** Davis James-James Mc Vey Et Al → Mine #1; 1976-06-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hill Creek Mining Company Inc → Mine #1; 1977-09-01 to 1978-04-02; source msha-controller-operator-history
- **controller_controls_mine:** Blankenship Leonard A → Mine #1; 1977-09-01 to 1978-04-02; source msha-controller-operator-history
- **controller_controls_operator:** Blankenship Leonard A → Hill Creek Mining Company Inc; 1977-09-01 to 1978-04-02; source msha-controller-operator-history
- **operator_operates_mine:** J & V Coal Company → Mine #1; 1978-04-03 to 1980-02-20; source msha-controller-operator-history
- **controller_controls_mine:** Ray Ronnie S & Ralph W → Mine #1; 1978-04-03 to 1980-02-20; source msha-controller-operator-history
- **controller_controls_operator:** Ray Ronnie S & Ralph W → J & V Coal Company; 1978-04-03 to 1980-02-20; source msha-controller-operator-history
- **operator_operates_mine:** S M A Coal Company Inc → Mine #1; 1980-02-21 to 1996-05-12; source msha-controller-operator-history
- **controller_controls_operator:** Davis James-James Mc Vey Et Al → S M A Coal Company Inc; 1980-02-21 to 1996-05-12; source msha-controller-operator-history
- **operator_operates_mine:** New Life Resources Inc → Mine #1; 1996-05-13 to 1998-02-26; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Drum → Mine #1; 1996-05-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Drum → New Life Resources Inc; 1996-05-13 to 1998-02-26; source msha-controller-operator-history
- **operator_operates_mine:** New Life Energy Inc → Mine #1; 1998-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Enneper Ewald Eberhard → Mine #1; 1998-02-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Enneper Ewald Eberhard → New Life Energy Inc; 1998-02-27 to current/open; source msha-controller-operator-history