# Relationship history for MSHA mine 4606959

Current hierarchy: **British Petroleum Company PLC → Hinch Coal Mining Company → Low Gap Surface 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:** Hinch Coal Mining Company → Low Gap Surface Mine; 1985-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** British Petroleum Company PLC → Low Gap Surface Mine; 1985-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** British Petroleum Company PLC → Hinch Coal Mining Company; 1985-06-01 to current/open; source msha-controller-operator-history