# Relationship history for MSHA mine 2402341

Current hierarchy: **Brent  Mickelson; Mike  Mickelson → Mickelson Rock Products LLC → Mickelson Rock Products**

- 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:** Mickelson Rock Products LLC → Mickelson Rock Products; 2003-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brent  Mickelson et al → Mickelson Rock Products; 2003-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brent  Mickelson et al → Mickelson Rock Products LLC; 2003-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Mickelson et al → Mickelson Rock Products LLC; 2003-10-02 to current/open; source msha-controller-operator-history