# Relationship history for MSHA mine 1518009

Current hierarchy: **John H  Parton → Parton Bros. Contracting, Inc. → 5A**

- 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:** Rex  Fought → 5A; 1989-03-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Edward L Clemons Estate et al → 5A; 1996-09-04 to 2001-01-16; source msha-controller-operator-history
- **controller_controls_mine:** John H  Parton → 5A; 1997-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Perry County Coal Corp → 5A; 1997-12-01 to 2000-11-14; source msha-controller-operator-history
- **controller_controls_operator:** Edward L Clemons Estate et al → Perry County Coal Corp; 1997-12-01 to 2000-11-14; source msha-controller-operator-history
- **controller_controls_mine:** Allen G  Stump et al → 5A; 1998-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Aero Energy Inc → 5A; 2000-11-15 to 2001-08-02; source msha-controller-operator-history
- **controller_controls_operator:** Rex  Fought → Aero Energy Inc; 2000-11-15 to 2001-08-02; source msha-controller-operator-history
- **operator_operates_mine:** Gentec Processing Inc → 5A; 2001-08-03 to 2002-05-05; source msha-controller-operator-history
- **controller_controls_operator:** Allen G  Stump et al → Gentec Processing Inc; 2001-08-03 to 2002-05-05; source msha-controller-operator-history
- **operator_operates_mine:** Parton Bros. Contracting, Inc. → 5A; 2002-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John H  Parton → Parton Bros. Contracting, Inc.; 2002-05-06 to current/open; source msha-controller-operator-history