# Relationship history for MSHA mine 4503450

Current hierarchy: **Jon  Mey → Trina Mine → TRINA MINE**

- 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:** Trina Mine → TRINA MINE; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jon  Mey → TRINA MINE; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jon  Mey → Trina Mine; 2000-08-01 to current/open; source msha-controller-operator-history