# Relationship history for MSHA mine 3003006

Current hierarchy: **Larroca Blase → Bbl Constructors Inc → Goodfellow 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:** Bbl Constructors Inc → Goodfellow Pit; 1991-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Larroca Blase → Goodfellow Pit; 1991-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larroca Blase → Bbl Constructors Inc; 1991-05-01 to current/open; source msha-controller-operator-history