# Relationship history for MSHA mine 4405711

Current hierarchy: **Delbert R  Sturgill → Lebo Mining Inc → Mine No 1**

- 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:** Double O Coal Corp → Mine No 1; 1981-08-01 to 1983-07-24; source msha-controller-operator-history
- **controller_controls_mine:** Neece Oscar C Jr & Orana Sharon → Mine No 1; 1981-08-01 to 1983-07-24; source msha-controller-operator-history
- **controller_controls_operator:** Neece Oscar C Jr & Orana Sharon → Double O Coal Corp; 1981-08-01 to 1983-07-24; source msha-controller-operator-history
- **operator_operates_mine:** S & M Coal Company → Mine No 1; 1983-07-25 to 1984-04-05; source msha-controller-operator-history
- **controller_controls_mine:** Strouth Philmon Et Al → Mine No 1; 1983-07-25 to 1984-04-05; source msha-controller-operator-history
- **controller_controls_operator:** Strouth Philmon Et Al → S & M Coal Company; 1983-07-25 to 1984-04-05; source msha-controller-operator-history
- **operator_operates_mine:** Lebo Mining Inc → Mine No 1; 1984-04-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Delbert R  Sturgill → Mine No 1; 1984-04-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Delbert R  Sturgill → Lebo Mining Inc; 1984-04-06 to current/open; source msha-controller-operator-history