# Relationship history for MSHA mine 1519859

Current hierarchy: **Tim B  Lusby → JRL Coal Inc. → Magnum #1**

- 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:** Tim B  Lusby → Magnum #1; 2017-02-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** JRL Coal Inc. → Magnum #1; 2019-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim B  Lusby → JRL Coal Inc.; 2019-05-17 to current/open; source msha-controller-operator-history