# Relationship history for MSHA mine 4407436

Current hierarchy: **Titan Cement International S A → Titan Mid-Atlantic Aggregates LLC → TMA Mobile Crushing Plant #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Titan Cement International S A → TMA Mobile Crushing Plant #1; 2010-06-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Titan Mid-Atlantic Aggregates LLC → TMA Mobile Crushing Plant #1; 2025-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Titan Cement International S A → Titan Mid-Atlantic Aggregates LLC; 2025-05-14 to current/open; source msha-controller-operator-history