# Relationship history for MSHA mine 2103869

Current hierarchy: **Beth  Holtmeier → Holtmeier Construction Inc → 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

- **controller_controls_mine:** Beth  Holtmeier → Plant 1; 2004-04-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Holtmeier Construction Inc → Plant 1; 2015-11-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Beth  Holtmeier → Holtmeier Construction Inc; 2015-11-10 to current/open; source msha-controller-operator-history