# Relationship history for MSHA mine 3503957

Current hierarchy: **Brandon  Lanter → Bdl plumbing → Green ridge rock products**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Bdl plumbing → Green ridge rock products; 2024-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brandon  Lanter → Green ridge rock products; 2024-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brandon  Lanter → Bdl plumbing; 2024-03-04 to current/open; source msha-controller-operator-history