# Relationship history for MSHA mine 4703531

Current hierarchy: **Jacob H  Batzler → HH&J Aggregate Landscape Supply Inc. → Elbe 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Batzler Trucking Inc → Elbe Pit; 2008-04-23 to 2019-07-16; source msha-controller-operator-history
- **controller_controls_mine:** Jacob H  Batzler → Elbe Pit; 2008-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jacob H  Batzler → Batzler Trucking Inc; 2008-04-23 to 2019-07-16; source msha-controller-operator-history
- **operator_operates_mine:** HH&J Aggregate Landscape Supply Inc. → Elbe Pit; 2019-07-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jacob H  Batzler → Elbe Pit; 2019-07-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jacob H  Batzler → HH&J Aggregate Landscape Supply Inc.; 2019-07-17 to current/open; source msha-controller-operator-history