# Relationship history for MSHA mine 1517680

Current hierarchy: **Noble James E → Apache Fuel → Mine No 2**

- 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:** Howard Cecil → Mine No 2; 1995-03-02 to 1995-07-06; source msha-controller-operator-history
- **operator_operates_mine:** Apache Fuel → Mine No 2; 1995-05-01 to 1995-07-06; source msha-controller-operator-history
- **controller_controls_operator:** Howard Cecil → Apache Fuel; 1995-05-01 to 1995-07-06; source msha-controller-operator-history
- **operator_operates_mine:** Apache Fuel → Mine No 2; 1995-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Noble James E → Mine No 2; 1995-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Noble James E → Apache Fuel; 1995-07-07 to current/open; source msha-controller-operator-history