# Relationship history for MSHA mine 1518389

Current hierarchy: **Allen Company Inc → The Allen Company, Inc → Dix River Stone**

- 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:** Allen Company Inc → Dix River Stone; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tommy  Owens → Dix River Stone; 1988-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Dix River Stone → Dix River Stone; 2001-06-01 to 2018-07-02; source msha-controller-operator-history
- **controller_controls_operator:** Tommy  Owens → Dix River Stone; 2001-06-01 to 2018-07-02; source msha-controller-operator-history
- **operator_operates_mine:** The Allen Company, Inc → Dix River Stone; 2018-07-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Allen Company Inc → The Allen Company, Inc; 2018-07-03 to current/open; source msha-controller-operator-history