# Relationship history for MSHA mine 1516034

Current hierarchy: **Hobart  Anderson → Woodland Hills Mining Company Inc → 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

- **controller_controls_mine:** Jim D  Akers et al → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Berwind Corporation → No 1; 1981-11-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jesse Branch Coal Company → No 1; 1987-05-01 to 1987-06-08; source msha-controller-operator-history
- **controller_controls_operator:** Berwind Corporation → Jesse Branch Coal Company; 1987-05-01 to 1987-06-08; source msha-controller-operator-history
- **operator_operates_mine:** A A & W Coals Inc → No 1; 1987-06-09 to 1994-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Jim D  Akers et al → A A & W Coals Inc; 1987-06-09 to 1994-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Harold E  Akers et al → A A & W Coals Inc; 1987-06-09 to 1994-07-19; source msha-controller-operator-history
- **controller_controls_mine:** Hobart  Anderson  et al → No 1; 1990-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Woodland Hills Mining Company Inc → No 1; 1994-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hobart  Anderson  et al → Woodland Hills Mining Company Inc; 1994-07-20 to current/open; source msha-controller-operator-history