# Relationship history for MSHA mine 0405019

Current hierarchy: **Edna  Wagner → Whiteman Aggregates → WHITEMAN AGGREGATES**

- 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:** Whiteman Aggregates → WHITEMAN AGGREGATES; 1989-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Edna  Wagner → WHITEMAN AGGREGATES; 1989-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edna  Wagner → Whiteman Aggregates; 1989-04-01 to current/open; source msha-controller-operator-history