# Relationship history for MSHA mine 4401697

Current hierarchy: **Delbert R  Sturgill → Lebo Mining Inc → No 2**

- 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:** Buchanan & Sons Coal Company Inc → No 2; 1950-01-01 to 1979-02-19; source msha-controller-operator-history
- **controller_controls_mine:** Buchanan Ray-Kenneth & Eddie → No 2; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Buchanan Ray-Kenneth & Eddie → Buchanan & Sons Coal Company Inc; 1950-01-01 to 1979-02-19; source msha-controller-operator-history
- **controller_controls_mine:** Bolling Cecil W → No 2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B & B Coal Corp → No 2; 1979-02-20 to 1981-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Bolling Cecil W → B & B Coal Corp; 1979-02-20 to 1981-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Neece Oscar C Jr & Orana Sharon → No 2; 1981-08-01 to 1983-07-24; source msha-controller-operator-history
- **operator_operates_mine:** Double O Coal Corp → No 2; 1981-09-15 to 1981-10-12; source msha-controller-operator-history
- **controller_controls_operator:** Neece Oscar C Jr & Orana Sharon → Double O Coal Corp; 1981-09-15 to 1981-10-12; source msha-controller-operator-history
- **operator_operates_mine:** M & S Coal Company Inc → No 2; 1981-10-13 to 1988-04-11; source msha-controller-operator-history
- **controller_controls_mine:** (William) Scott  Moore → No 2; 1981-10-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** (William) Scott  Moore → M & S Coal Company Inc; 1981-10-13 to 1988-04-11; source msha-controller-operator-history
- **controller_controls_mine:** Delbert R  Sturgill → No 2; 1984-04-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jebko Mining Inc → No 2; 1988-04-12 to 1989-01-02; source msha-controller-operator-history
- **controller_controls_mine:** Bise Norma L → No 2; 1988-04-12 to 1989-01-02; source msha-controller-operator-history
- **controller_controls_operator:** Bise Norma L → Jebko Mining Inc; 1988-04-12 to 1989-01-02; source msha-controller-operator-history
- **operator_operates_mine:** Lebo Mining Inc → No 2; 1989-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Delbert R  Sturgill → Lebo Mining Inc; 1989-01-03 to current/open; source msha-controller-operator-history