# Relationship history for MSHA mine 1518158

Current hierarchy: **Haynes Rick → Performance Mining Inc → 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

- **operator_operates_mine:** Phoenix Coal Company Inc → Mine No 2; 1999-04-01 to 1999-08-02; source msha-controller-operator-history
- **controller_controls_mine:** Scott  Duncan → Mine No 2; 1999-04-01 to 2001-02-05; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Duncan → Phoenix Coal Company Inc; 1999-04-01 to 1999-08-02; source msha-controller-operator-history
- **operator_operates_mine:** Performance Mining Inc → Mine No 2; 1999-08-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Haynes Rick → Mine No 2; 1999-08-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Haynes Rick → Performance Mining Inc; 1999-08-03 to current/open; source msha-controller-operator-history