# Relationship history for MSHA mine 4404104

Current hierarchy: **Horn Bill E → Triple M Coal Company Inc → Mine No 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** H C Bostic Coal Company Inc → Mine No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** H C Bostic Coal Company Inc → Mine No 1; 1975-05-21 to 1978-02-12; source msha-controller-operator-history
- **controller_controls_operator:** H C Bostic Coal Company Inc → H C Bostic Coal Company Inc; 1975-05-21 to 1978-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Stiltner Gratho L & Randall → Mine No 1; 1975-11-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** G & R Coal Company → Mine No 1; 1978-02-13 to 1980-02-25; source msha-controller-operator-history
- **controller_controls_operator:** Stiltner Gratho L & Randall → G & R Coal Company; 1978-02-13 to 1980-02-25; source msha-controller-operator-history
- **operator_operates_mine:** H & G Coal Company → Mine No 1; 1980-02-26 to 1980-07-17; source msha-controller-operator-history
- **controller_controls_mine:** Stiltner Homer & Gary → Mine No 1; 1980-02-26 to 1980-07-17; source msha-controller-operator-history
- **controller_controls_operator:** Stiltner Homer & Gary → H & G Coal Company; 1980-02-26 to 1980-07-17; source msha-controller-operator-history
- **operator_operates_mine:** J & L Coal Company → Mine No 1; 1980-07-18 to 1980-11-27; source msha-controller-operator-history
- **controller_controls_mine:** J & L Coal Company → Mine No 1; 1980-07-18 to 1980-11-27; source msha-controller-operator-history
- **controller_controls_operator:** J & L Coal Company → J & L Coal Company; 1980-07-18 to 1980-11-27; source msha-controller-operator-history
- **operator_operates_mine:** J & J Boyd Coal Company → Mine No 1; 1980-11-28 to 1983-05-17; source msha-controller-operator-history
- **controller_controls_mine:** Boyd Junior & James R → Mine No 1; 1980-11-28 to 1983-05-17; source msha-controller-operator-history
- **controller_controls_operator:** Boyd Junior & James R → J & J Boyd Coal Company; 1980-11-28 to 1983-05-17; source msha-controller-operator-history
- **operator_operates_mine:** Big Wheel Coal Company → Mine No 1; 1983-05-18 to 1984-05-02; source msha-controller-operator-history
- **controller_controls_mine:** Wampler Freddie & Issac Penley Jr → Mine No 1; 1983-05-18 to 1984-05-02; source msha-controller-operator-history
- **controller_controls_operator:** Wampler Freddie & Issac Penley Jr → Big Wheel Coal Company; 1983-05-18 to 1984-05-02; source msha-controller-operator-history
- **controller_controls_mine:** Boggs Glenn R-Hassel Davis & Billy Stanley → Mine No 1; 1984-02-10 to 1985-06-23; source msha-controller-operator-history
- **operator_operates_mine:** Cherry Coal Company → Mine No 1; 1984-05-03 to 1985-06-23; source msha-controller-operator-history
- **controller_controls_operator:** Boggs Glenn R-Hassel Davis & Billy Stanley → Cherry Coal Company; 1984-05-03 to 1985-06-23; source msha-controller-operator-history
- **operator_operates_mine:** H & H Coal Company Inc → Mine No 1; 1985-06-24 to 1988-07-13; source msha-controller-operator-history
- **controller_controls_mine:** Harman James E → Mine No 1; 1985-06-24 to 1988-07-13; source msha-controller-operator-history
- **controller_controls_operator:** Harman James E → H & H Coal Company Inc; 1985-06-24 to 1988-07-13; source msha-controller-operator-history
- **operator_operates_mine:** Triple M Coal Company Inc → Mine No 1; 1988-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Horn Bill E → Mine No 1; 1988-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horn Bill E → Triple M Coal Company Inc; 1988-07-14 to current/open; source msha-controller-operator-history