# Relationship history for MSHA mine 1102682

Current hierarchy: **Castellana R K → Illinois Coal Oil & Gas Company → Illinois Coal Oil & Gas Co (Coal Mine No**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Castellana R K → Illinois Coal Oil & Gas Co (Coal Mine No; 1976-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Illinois Coal Oil & Gas Company → Illinois Coal Oil & Gas Co (Coal Mine No; 1979-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Castellana R K → Illinois Coal Oil & Gas Company; 1979-05-01 to current/open; source msha-controller-operator-history