# Relationship history for MSHA mine 1201766

Current hierarchy: **Lemond Earl D → Lemond Enterprises Inc → E-Victor Pit No 4**

- 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:** Lemond Earl D → E-Victor Pit No 4; 1978-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lemond Enterprises Inc → E-Victor Pit No 4; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lemond Earl D → Lemond Enterprises Inc; 1980-01-01 to current/open; source msha-controller-operator-history