# Relationship history for MSHA mine 2902535

Current hierarchy: **Justin Glenn  Morrison → JGM Construction LLC → JGM Pit**

- 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:** JGM Construction LLC → JGM Pit; 2021-06-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Justin Glenn  Morrison → JGM Pit; 2021-06-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Justin Glenn  Morrison → JGM Construction LLC; 2021-06-28 to current/open; source msha-controller-operator-history