# Relationship history for MSHA mine 1519919

Current hierarchy: **Robby  Jessee → Black Mountain Energy LLC → Turkey Pen #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:** Robby  Jessee → Turkey Pen #1; 2018-01-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Black Mountain Energy LLC → Turkey Pen #1; 2022-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robby  Jessee → Black Mountain Energy LLC; 2022-05-12 to current/open; source msha-controller-operator-history