# Relationship history for MSHA mine 3200575

Current hierarchy: **Jay  Holen; Scott  Holen → Orrin A. Holen Construction, Inc. → Portable Unit**

- 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:** Orrin A. Holen Construction, Inc. → Portable Unit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scott  Holen  et al → Portable Unit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Holen  et al → Orrin A. Holen Construction, Inc.; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jay  Holen  et al → Orrin A. Holen Construction, Inc.; 1950-01-01 to current/open; source msha-controller-operator-history