# Relationship history for MSHA mine 5001468

Current hierarchy: **Thurman Oil & Mining → Thurman Oil & Mining → Ester 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Thurman Oil & Mining → Ester Mine; 1984-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thurman Oil & Mining → Ester Mine; 1984-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thurman Oil & Mining → Thurman Oil & Mining; 1984-06-01 to current/open; source msha-controller-operator-history