# Relationship history for MSHA mine 1200896

Current hierarchy: **Haas Paul D → J H & L Coal Company Inc → J H & L No 1 Strip Mine**

- 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

- **operator_operates_mine:** J H & L Coal Company Inc → J H & L No 1 Strip Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Haas Paul D → J H & L No 1 Strip Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Haas Paul D → J H & L Coal Company Inc; 1950-01-01 to current/open; source msha-controller-operator-history