# Relationship history for MSHA mine 1519808

Current hierarchy: **Lester A  Lewis; Phillip  Lewis → Hyden Development East → Hyden Development East #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

- **operator_operates_mine:** Hyden Development East → Hyden Development East #1; 2017-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Phillip  Lewis et al → Hyden Development East #1; 2017-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phillip  Lewis et al → Hyden Development East; 2017-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lester A  Lewis et al → Hyden Development East; 2017-03-27 to current/open; source msha-controller-operator-history