# Relationship history for MSHA mine 4702610

Current hierarchy: **Town Of Cable → Town Of Cable → Walter Wald 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:** Geisler Crushing → Walter Wald Pit; 1979-01-01 to 1980-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Geisler Jim → Walter Wald Pit; 1979-01-01 to 1980-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Geisler Jim → Geisler Crushing; 1979-01-01 to 1980-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Town Of Cable → Walter Wald Pit; 1980-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Town Of Cable → Walter Wald Pit; 1980-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Town Of Cable → Town Of Cable; 1980-04-01 to current/open; source msha-controller-operator-history