# Relationship history for MSHA mine 2103225

Current hierarchy: **Loren ( Butch)  Hoffman → Hoffman Construction Company Inc → Portable I**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Hoffman Construction Company Inc → Portable I; 2000-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Loren ( Butch)  Hoffman → Portable I; 2000-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Loren ( Butch)  Hoffman → Hoffman Construction Company Inc; 2000-04-01 to current/open; source msha-controller-operator-history