# Relationship history for MSHA mine 4105008

Current hierarchy: **Bonnie  Zumwalt → H.L. Zumwalt Quarry Operations → FM 1283**

- 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

- **controller_controls_mine:** Henry L  Zumwalt → FM 1283; 2001-04-01 to 2022-08-20; source msha-controller-operator-history
- **operator_operates_mine:** H.L. Zumwalt Construction, Inc. → FM 1283; 2013-04-08 to 2025-06-12; source msha-controller-operator-history
- **controller_controls_operator:** Henry L  Zumwalt → H.L. Zumwalt Construction, Inc.; 2013-04-08 to 2022-08-20; source msha-controller-operator-history
- **controller_controls_mine:** Estate of Henry Zumwalt → FM 1283; 2022-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Estate of Henry Zumwalt → H.L. Zumwalt Construction, Inc.; 2022-08-21 to 2025-06-12; source msha-controller-operator-history
- **operator_operates_mine:** H.L. Zumwalt Quarry Operations → FM 1283; 2025-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bonnie  Zumwalt → FM 1283; 2025-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bonnie  Zumwalt → H.L. Zumwalt Quarry Operations; 2025-06-13 to current/open; source msha-controller-operator-history