# Relationship history for MSHA mine 0901269

Current hierarchy: **IDI Land Holdings LLC → Landmark Materials LLC → Lamar- Monroe Quarry**

- 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:** Landmark Materials LLC → Lamar- Monroe Quarry; 2024-03-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** IDI Land Holdings LLC → Lamar- Monroe Quarry; 2024-03-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** IDI Land Holdings LLC → Landmark Materials LLC; 2024-03-05 to current/open; source msha-controller-operator-history