# Relationship history for MSHA mine 4404560

Current hierarchy: **Ronnie A  Edwards → Red Dog Coal Corp → No 1 Mine**

- 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:** United  Company → No 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Justus Timothy Et Al → No 1 Mine; 1975-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Little Mike Coal Corp → No 1 Mine; 1976-11-01 to 1977-05-04; source msha-controller-operator-history
- **controller_controls_mine:** Elswick Kermit → No 1 Mine; 1976-11-01 to 1978-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Elswick Kermit → Little Mike Coal Corp; 1976-11-01 to 1977-05-04; source msha-controller-operator-history
- **operator_operates_mine:** Clinch River Coal Company → No 1 Mine; 1977-05-05 to 1977-12-03; source msha-controller-operator-history
- **controller_controls_mine:** Keene Willard & Don → No 1 Mine; 1977-05-05 to 1977-12-03; source msha-controller-operator-history
- **controller_controls_operator:** Keene Willard & Don → Clinch River Coal Company; 1977-05-05 to 1977-12-03; source msha-controller-operator-history
- **operator_operates_mine:** Roseann Coal Company → No 1 Mine; 1977-12-04 to 1978-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Potter Clayton → No 1 Mine; 1977-12-04 to 1978-07-26; source msha-controller-operator-history
- **controller_controls_operator:** Potter Clayton → Roseann Coal Company; 1977-12-04 to 1978-07-26; source msha-controller-operator-history
- **operator_operates_mine:** Wellmore Coal Corp → No 1 Mine; 1978-07-27 to 1979-02-11; source msha-controller-operator-history
- **controller_controls_operator:** United  Company → Wellmore Coal Corp; 1978-07-27 to 1979-02-11; source msha-controller-operator-history
- **operator_operates_mine:** Betty Lynn Coal Company Inc → No 1 Mine; 1979-02-12 to 1980-02-04; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Sidney Et Al → No 1 Mine; 1979-02-12 to 1980-02-04; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Sidney Et Al → Betty Lynn Coal Company Inc; 1979-02-12 to 1980-02-04; source msha-controller-operator-history
- **operator_operates_mine:** Dyna Carb Coal Company Inc → No 1 Mine; 1980-02-05 to 1980-07-16; source msha-controller-operator-history
- **controller_controls_operator:** Justus Timothy Et Al → Dyna Carb Coal Company Inc; 1980-02-05 to 1980-07-16; source msha-controller-operator-history
- **operator_operates_mine:** Fountain Coal Corp → No 1 Mine; 1980-07-17 to 1980-09-04; source msha-controller-operator-history
- **controller_controls_mine:** Boyd Billy E → No 1 Mine; 1980-07-17 to 1980-09-04; source msha-controller-operator-history
- **controller_controls_operator:** Boyd Billy E → Fountain Coal Corp; 1980-07-17 to 1980-09-04; source msha-controller-operator-history
- **operator_operates_mine:** Maranatha Mining Inc → No 1 Mine; 1980-09-05 to 1982-05-16; source msha-controller-operator-history
- **controller_controls_mine:** Blankenship Frank → No 1 Mine; 1980-09-05 to 1982-05-16; source msha-controller-operator-history
- **controller_controls_operator:** Blankenship Frank → Maranatha Mining Inc; 1980-09-05 to 1982-05-16; source msha-controller-operator-history
- **controller_controls_mine:** Ronnie A  Edwards → No 1 Mine; 1982-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Red Dog Coal Corp → No 1 Mine; 1982-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronnie A  Edwards → Red Dog Coal Corp; 1982-05-17 to current/open; source msha-controller-operator-history