# Relationship history for MSHA mine 2101705

Current hierarchy: **Kompelien Delmo C → Delmo Kompelien Company → Garrison Sand And Gravel**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Wiley Enterprises Inc → Garrison Sand And Gravel; 1950-01-01 to 1981-07-07; source msha-controller-operator-history
- **controller_controls_mine:** Wiley Rodney → Garrison Sand And Gravel; 1950-01-01 to 1981-07-07; source msha-controller-operator-history
- **controller_controls_operator:** Wiley Rodney → Wiley Enterprises Inc; 1950-01-01 to 1981-07-07; source msha-controller-operator-history
- **operator_operates_mine:** Delmo Kompelien Company → Garrison Sand And Gravel; 1981-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kompelien Delmo C → Garrison Sand And Gravel; 1981-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kompelien Delmo C → Delmo Kompelien Company; 1981-07-08 to current/open; source msha-controller-operator-history