# Relationship history for MSHA mine 0203329

Current hierarchy: **Mark  Velasco → WestRock, LLC. → 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** WestRock, LLC. → Plant 1; 2014-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mark  Velasco → Plant 1; 2014-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Velasco → WestRock, LLC.; 2014-03-25 to current/open; source msha-controller-operator-history