# Relationship history for MSHA mine 4601423

Current hierarchy: **Bailey Ronnie → Black Beauty Mining Company Inc → #12 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:** United Pocahontas Coal Company → #12 Mine; 1950-01-01 to 1983-07-24; source msha-controller-operator-history
- **controller_controls_mine:** National Bulk Carriers → #12 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** National Bulk Carriers → United Pocahontas Coal Company; 1950-01-01 to 1983-07-24; source msha-controller-operator-history
- **operator_operates_mine:** S & E Coal Company → #12 Mine; 1983-07-25 to 1984-01-18; source msha-controller-operator-history
- **controller_controls_mine:** Epperson Vinson Jr → #12 Mine; 1983-07-25 to 1984-01-18; source msha-controller-operator-history
- **controller_controls_operator:** Epperson Vinson Jr → S & E Coal Company; 1983-07-25 to 1984-01-18; source msha-controller-operator-history
- **operator_operates_mine:** B & L Coal Corp → #12 Mine; 1984-01-19 to 1986-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Crawford Linda → #12 Mine; 1984-01-19 to 1986-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Crawford Linda → B & L Coal Corp; 1984-01-19 to 1986-05-08; source msha-controller-operator-history
- **operator_operates_mine:** J & J Coal Company Inc → #12 Mine; 1986-05-09 to 1986-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Seay Joseph → #12 Mine; 1986-05-09 to 1986-10-19; source msha-controller-operator-history
- **controller_controls_operator:** Seay Joseph → J & J Coal Company Inc; 1986-05-09 to 1986-10-19; source msha-controller-operator-history
- **operator_operates_mine:** W C & H Coal Company Inc → #12 Mine; 1986-10-20 to 1986-12-11; source msha-controller-operator-history
- **controller_controls_mine:** Harman William J → #12 Mine; 1986-10-20 to 1988-02-23; source msha-controller-operator-history
- **controller_controls_operator:** Harman William J → W C & H Coal Company Inc; 1986-10-20 to 1986-12-11; source msha-controller-operator-history
- **operator_operates_mine:** Mine Service Repair → #12 Mine; 1986-12-12 to 1987-10-25; source msha-controller-operator-history
- **controller_controls_mine:** Mine Service Repair → #12 Mine; 1986-12-12 to 1987-10-25; source msha-controller-operator-history
- **controller_controls_operator:** Mine Service Repair → Mine Service Repair; 1986-12-12 to 1987-10-25; source msha-controller-operator-history
- **operator_operates_mine:** S & S Energy Inc → #12 Mine; 1987-10-26 to 1989-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Smeltzer Robert → #12 Mine; 1987-10-26 to 1989-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Smeltzer Robert → S & S Energy Inc; 1987-10-26 to 1989-05-08; source msha-controller-operator-history
- **operator_operates_mine:** Black Beauty Mining Company Inc → #12 Mine; 1989-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bailey Ronnie → #12 Mine; 1989-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Ronnie → Black Beauty Mining Company Inc; 1989-05-09 to current/open; source msha-controller-operator-history