# Relationship history for MSHA mine 3609267

Current hierarchy: **Larry G  Temple → Temple Portable Crushing Inc → TRIO TF 4620**

- 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:** Larry G  Temple → TRIO TF 4620; 1999-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Temple Portable Crushing Inc → TRIO TF 4620; 2004-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry G  Temple → Temple Portable Crushing Inc; 2004-07-15 to current/open; source msha-controller-operator-history