# Relationship history for MSHA mine 3304440

Current hierarchy: **John O  Miller → J M Mining & Reclamation → Miller Pit**

- 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:** J M Mining & Reclamation → Miller Pit; 1999-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John O  Miller → Miller Pit; 1999-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John O  Miller → J M Mining & Reclamation; 1999-07-01 to current/open; source msha-controller-operator-history