# Relationship history for MSHA mine 4606737

Current hierarchy: **Hollis Samuel L → Circle H Farms → Circle H**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Basile John Sr & Sam Hollis → Circle H; 1982-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B & H Excavating → Circle H; 1984-01-01 to 1985-03-04; source msha-controller-operator-history
- **controller_controls_operator:** Basile John Sr & Sam Hollis → B & H Excavating; 1984-01-01 to 1985-03-04; source msha-controller-operator-history
- **operator_operates_mine:** Circle H Farms → Circle H; 1985-03-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hollis Samuel L → Circle H; 1985-03-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hollis Samuel L → Circle H Farms; 1985-03-05 to current/open; source msha-controller-operator-history