# Relationship history for MSHA mine 4404953

Current hierarchy: **Turner Darlene Harrison → Bruce Coal Company Inc → Mine #6**

- 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:** Bolling Cecil W → Mine #6; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dingus Lowell Et Al → Mine #6; 1974-07-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B & D Coal Company → Mine #6; 1978-02-01 to 1978-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Joyel W & Julian Jessee → Mine #6; 1978-02-01 to 1978-09-11; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Joyel W & Julian Jessee → B & D Coal Company; 1978-02-01 to 1978-09-11; source msha-controller-operator-history
- **operator_operates_mine:** J & D Coal Company Inc → Mine #6; 1978-09-12 to 1980-05-18; source msha-controller-operator-history
- **controller_controls_operator:** Dingus Lowell Et Al → J & D Coal Company Inc; 1978-09-12 to 1980-05-18; source msha-controller-operator-history
- **operator_operates_mine:** B & B Coal Corp → Mine #6; 1980-05-19 to 1981-03-08; source msha-controller-operator-history
- **controller_controls_operator:** Bolling Cecil W → B & B Coal Corp; 1980-05-19 to 1981-03-08; source msha-controller-operator-history
- **operator_operates_mine:** Sunset Enterprises Inc → Mine #6; 1981-03-09 to 1983-06-22; source msha-controller-operator-history
- **controller_controls_mine:** Large Curtis Et Al → Mine #6; 1981-03-09 to 1983-06-22; source msha-controller-operator-history
- **controller_controls_operator:** Large Curtis Et Al → Sunset Enterprises Inc; 1981-03-09 to 1983-06-22; source msha-controller-operator-history
- **operator_operates_mine:** Large Construction Company → Mine #6; 1983-06-23 to 1985-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Large Curtis → Mine #6; 1983-06-23 to 1985-09-11; source msha-controller-operator-history
- **controller_controls_operator:** Large Curtis → Large Construction Company; 1983-06-23 to 1985-09-11; source msha-controller-operator-history
- **operator_operates_mine:** Recon Coal Company Inc → Mine #6; 1985-09-12 to 1985-12-01; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Mark R → Mine #6; 1985-09-12 to 1985-12-01; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Mark R → Recon Coal Company Inc; 1985-09-12 to 1985-12-01; source msha-controller-operator-history
- **operator_operates_mine:** Bruce Coal Company Inc → Mine #6; 1985-12-02 to 1987-03-03; source msha-controller-operator-history
- **controller_controls_mine:** Turner Kenneth C → Mine #6; 1985-12-02 to 1987-03-03; source msha-controller-operator-history
- **controller_controls_operator:** Turner Kenneth C → Bruce Coal Company Inc; 1985-12-02 to 1987-03-03; source msha-controller-operator-history
- **operator_operates_mine:** Bruce Coal Company Inc → Mine #6; 1987-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Turner Darlene Harrison → Mine #6; 1987-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Turner Darlene Harrison → Bruce Coal Company Inc; 1987-03-04 to current/open; source msha-controller-operator-history