# Relationship history for MSHA mine 4300596

Current hierarchy: **Sherri  Tucker → R. E. Tucker Inc. → Metso HP 300**

- 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:** Ronald E  Tucker et al → Metso HP 300; 1986-05-06 to 2020-02-27; source msha-controller-operator-history
- **operator_operates_mine:** R. E. Tucker Inc. → Metso HP 300; 2003-08-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald E  Tucker et al → R. E. Tucker Inc.; 2003-08-05 to 2020-02-27; source msha-controller-operator-history
- **controller_controls_mine:** Sherri  Tucker → Metso HP 300; 2020-02-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sherri  Tucker → R. E. Tucker Inc.; 2020-02-28 to current/open; source msha-controller-operator-history