# Relationship history for MSHA mine 3601854

Current hierarchy: **Richard J  Withelder → Hegins Mining Company → Hillside Breaker**

- 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:** Hegins Mining Company → Hillside Breaker; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kieffer Earl → Hillside Breaker; 1950-01-01 to 2012-11-27; source msha-controller-operator-history
- **controller_controls_operator:** Kieffer Earl → Hegins Mining Company; 1950-01-01 to 2012-11-27; source msha-controller-operator-history
- **controller_controls_mine:** Richard J  Withelder → Hillside Breaker; 2012-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard J  Withelder → Hegins Mining Company; 2012-11-28 to current/open; source msha-controller-operator-history