# Relationship history for MSHA mine 3503525

Current hierarchy: **Russ  Dixon → Reclaim Inc → PORTABLE CRUSHER PLT.**

- 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:** Reclaim Inc → PORTABLE CRUSHER PLT.; 2001-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Russ  Dixon → PORTABLE CRUSHER PLT.; 2001-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Russ  Dixon → Reclaim Inc; 2001-05-01 to current/open; source msha-controller-operator-history