# Relationship history for MSHA mine 1512479

Current hierarchy: **Parsons Paul → Foxco Energy → #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

- **operator_operates_mine:** L P Coal Company Inc → #1; 1980-08-01 to 1983-01-25; source msha-controller-operator-history
- **controller_controls_mine:** Lewis Jack C → #1; 1980-08-01 to 1983-01-25; source msha-controller-operator-history
- **controller_controls_operator:** Lewis Jack C → L P Coal Company Inc; 1980-08-01 to 1983-01-25; source msha-controller-operator-history
- **controller_controls_mine:** Ball Ralph → #1; 1981-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Deaton W Philip & Terry W Ferguson → #1; 1982-12-13 to 1984-01-08; source msha-controller-operator-history
- **operator_operates_mine:** Therismos Mining → #1; 1983-01-26 to 1983-06-28; source msha-controller-operator-history
- **controller_controls_operator:** Deaton W Philip & Terry W Ferguson → Therismos Mining; 1983-01-26 to 1983-06-28; source msha-controller-operator-history
- **operator_operates_mine:** Sterling Energy Inc → #1; 1983-06-29 to 1984-08-01; source msha-controller-operator-history
- **controller_controls_operator:** Ball Ralph → Sterling Energy Inc; 1983-06-29 to 1984-08-01; source msha-controller-operator-history
- **controller_controls_mine:** Schwartzenberg Wade L → #1; 1984-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** W M Mining Company Inc → #1; 1984-08-02 to 1985-09-23; source msha-controller-operator-history
- **controller_controls_operator:** Schwartzenberg Wade L → W M Mining Company Inc; 1984-08-02 to 1985-09-23; source msha-controller-operator-history
- **controller_controls_mine:** Akers Larry W → #1; 1985-01-31 to 1986-09-08; source msha-controller-operator-history
- **operator_operates_mine:** Blaine Creek Mining Company Inc → #1; 1985-09-24 to 1986-09-08; source msha-controller-operator-history
- **controller_controls_operator:** Akers Larry W → Blaine Creek Mining Company Inc; 1985-09-24 to 1986-09-08; source msha-controller-operator-history
- **operator_operates_mine:** South Star Mining Company Inc → #1; 1986-09-09 to 1987-03-23; source msha-controller-operator-history
- **controller_controls_mine:** Barrett Robert → #1; 1986-09-09 to 1987-03-23; source msha-controller-operator-history
- **controller_controls_operator:** Barrett Robert → South Star Mining Company Inc; 1986-09-09 to 1987-03-23; source msha-controller-operator-history
- **operator_operates_mine:** Foxco Energy → #1; 1987-03-24 to 1987-11-18; source msha-controller-operator-history
- **controller_controls_mine:** Hubbard Bruce → #1; 1987-03-24 to 1987-11-18; source msha-controller-operator-history
- **controller_controls_operator:** Hubbard Bruce → Foxco Energy; 1987-03-24 to 1987-11-18; source msha-controller-operator-history
- **operator_operates_mine:** Foxco Energy → #1; 1987-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Parsons Paul → #1; 1987-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Parsons Paul → Foxco Energy; 1987-11-19 to current/open; source msha-controller-operator-history