# Relationship history for MSHA mine 3503028

Current hierarchy: **Hanes Aubrey W → Flintstone Crushing & Construction Company → Camas Creek 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Hanes Aubrey W → Camas Creek Pit; 1979-08-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Flintstone Crushing & Construction Company → Camas Creek Pit; 1980-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hanes Aubrey W → Flintstone Crushing & Construction Company; 1980-07-01 to current/open; source msha-controller-operator-history