# Relationship history for MSHA mine 3608432

Current hierarchy: **Vansickle Phillip → Vansickle Coal → Phillips Site**

- 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:** Australian Recovery Technology U S Inc → Phillips Site; 1950-01-01 to 1994-02-14; source msha-controller-operator-history
- **controller_controls_mine:** Morgan David → Phillips Site; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Morgan David → Australian Recovery Technology U S Inc; 1950-01-01 to 1994-02-14; source msha-controller-operator-history
- **operator_operates_mine:** Global Coal Phillips Inc → Phillips Site; 1994-02-15 to 1997-01-05; source msha-controller-operator-history
- **controller_controls_mine:** Guy  Cramer → Phillips Site; 1994-02-15 to 1997-01-05; source msha-controller-operator-history
- **controller_controls_operator:** Guy  Cramer → Global Coal Phillips Inc; 1994-02-15 to 1997-01-05; source msha-controller-operator-history
- **operator_operates_mine:** Vansickle Coal → Phillips Site; 1997-01-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Vansickle Phillip → Phillips Site; 1997-01-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vansickle Phillip → Vansickle Coal; 1997-01-06 to current/open; source msha-controller-operator-history