# Relationship history for MSHA mine 0405698

Current hierarchy: **Rod  Fowler → J & R Materials → Corona PA**

- 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 & R Materials → Corona PA; 2006-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rod  Fowler → Corona PA; 2006-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rod  Fowler → J & R Materials; 2006-11-28 to current/open; source msha-controller-operator-history