# Relationship history for MSHA mine 4402224

Current hierarchy: **Adkins May → R & M Coal Company Inc → 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** G & C Coal Company → No 1 Mine; 1950-01-01 to 1972-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Justice George Et Al → No 1 Mine; 1950-01-01 to 1972-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Justice George Et Al → G & C Coal Company; 1950-01-01 to 1972-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Hurley & Justus Coal Company → No 1 Mine; 1972-05-01 to 1978-05-25; source msha-controller-operator-history
- **controller_controls_mine:** Justus Donald Et Al → No 1 Mine; 1972-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Justus Donald Et Al → Hurley & Justus Coal Company; 1972-05-01 to 1978-05-25; source msha-controller-operator-history
- **controller_controls_mine:** Pruitt Danny E → No 1 Mine; 1975-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hurley & Justus Coal Company → No 1 Mine; 1978-05-26 to 1979-06-12; source msha-controller-operator-history
- **controller_controls_mine:** Daniels Lloyd Et Al → No 1 Mine; 1978-05-26 to 1979-06-12; source msha-controller-operator-history
- **controller_controls_operator:** Daniels Lloyd Et Al → Hurley & Justus Coal Company; 1978-05-26 to 1979-06-12; source msha-controller-operator-history
- **operator_operates_mine:** Hurley & Justus Coal Company → No 1 Mine; 1979-06-13 to 1980-07-27; source msha-controller-operator-history
- **controller_controls_mine:** Charles Ayers → No 1 Mine; 1979-06-13 to 1980-07-27; source msha-controller-operator-history
- **controller_controls_operator:** Charles Ayers → Hurley & Justus Coal Company; 1979-06-13 to 1980-07-27; source msha-controller-operator-history
- **operator_operates_mine:** Black Hawk Coal Company Inc → No 1 Mine; 1980-07-28 to 1980-12-07; source msha-controller-operator-history
- **controller_controls_operator:** Pruitt Danny E → Black Hawk Coal Company Inc; 1980-07-28 to 1980-12-07; source msha-controller-operator-history
- **operator_operates_mine:** R & M Coal Company Inc → No 1 Mine; 1980-12-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adkins May → No 1 Mine; 1980-12-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adkins May → R & M Coal Company Inc; 1980-12-08 to current/open; source msha-controller-operator-history