# Relationship history for MSHA mine 4300712

Current hierarchy: **Rocky L  LaRock; Brenda K  LaRock; Justin L  LaRock → Bernie LaRock & Son Inc → Whitaker 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:** Bernie LaRock & Son Inc → Whitaker Pit; 2010-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rocky L  LaRock et al → Whitaker Pit; 2010-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rocky L  LaRock et al → Bernie LaRock & Son Inc; 2010-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Justin L  LaRock et al → Bernie LaRock & Son Inc; 2010-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brenda K  LaRock et al → Bernie LaRock & Son Inc; 2010-06-02 to current/open; source msha-controller-operator-history