# Relationship history for MSHA mine 3607335

Current hierarchy: **Carucci Robert A → Intercoal Inc → Intercoal No 2**

- 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:** Intercoal Inc → Intercoal No 2; 1982-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carucci Robert A → Intercoal No 2; 1982-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carucci Robert A → Intercoal Inc; 1982-06-01 to current/open; source msha-controller-operator-history