# Relationship history for MSHA mine 3200895

Current hierarchy: **Chad  Monson → Monson Corporation → Eurocrusher**

- 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:** Chad  Monson → Eurocrusher; 2008-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Monson Corporation → Eurocrusher; 2011-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chad  Monson → Monson Corporation; 2011-06-16 to current/open; source msha-controller-operator-history