# Relationship history for MSHA mine 1202286

Current hierarchy: **Cary P  Groninger; Richard  Groninger → G & G Hauling & Excavating Inc → G & G Hauling & Excavating Inc**

- 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

- **controller_controls_mine:** Cary P  Groninger et al → G & G Hauling & Excavating Inc; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** G & G Hauling & Excavating Inc → G & G Hauling & Excavating Inc; 2000-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cary P  Groninger et al → G & G Hauling & Excavating Inc; 2000-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Groninger et al → G & G Hauling & Excavating Inc; 2000-07-01 to current/open; source msha-controller-operator-history