# Relationship history for MSHA mine 1002330

Current hierarchy: **Stephanie  Cuccio Guinn; William Charles  Guinn → 4-G Contracting → Whitcomb 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:** 4-G Contracting → Whitcomb Pit; 2021-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William Charles  Guinn et al → Whitcomb Pit; 2021-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William Charles  Guinn et al → 4-G Contracting; 2021-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephanie  Cuccio Guinn et al → 4-G Contracting; 2021-05-17 to current/open; source msha-controller-operator-history