# Relationship history for MSHA mine 0102221

Current hierarchy: **Raines Charles H → Kinlock Coals Inc → Big Ridge 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

- **controller_controls_mine:** Raines Charles H → Big Ridge Mine; 1977-09-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kinlock Coals Inc → Big Ridge Mine; 1980-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Raines Charles H → Kinlock Coals Inc; 1980-06-01 to current/open; source msha-controller-operator-history