# Relationship history for MSHA mine 3604347

Current hierarchy: **Baker Brandan G → Farkus Coal Company → Vesta #4 #2 Hill**

- 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:** Baker Edward L → Vesta #4 #2 Hill; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tremont Mining Company → Vesta #4 #2 Hill; 1972-09-01 to 1985-01-24; source msha-controller-operator-history
- **controller_controls_operator:** Baker Edward L → Tremont Mining Company; 1972-09-01 to 1985-01-24; source msha-controller-operator-history
- **operator_operates_mine:** Farkus Coal Company → Vesta #4 #2 Hill; 1985-01-25 to 1987-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Farkus Steven J → Vesta #4 #2 Hill; 1985-01-25 to 1987-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Farkus Steven J → Farkus Coal Company; 1985-01-25 to 1987-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Farkus Coal Company → Vesta #4 #2 Hill; 1987-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Baker Brandan G → Vesta #4 #2 Hill; 1987-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Baker Brandan G → Farkus Coal Company; 1987-05-01 to current/open; source msha-controller-operator-history