# Relationship history for MSHA mine 0202406

Current hierarchy: **St Genevieve Resources Ltd → SGV Resources Inc → Emerald Isle**

- 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:** T S C Enterprises Inc → Emerald Isle; 1987-12-01 to 1989-10-12; source msha-controller-operator-history
- **controller_controls_mine:** Stoffers G H → Emerald Isle; 1987-12-01 to 1989-10-12; source msha-controller-operator-history
- **controller_controls_operator:** Stoffers G H → T S C Enterprises Inc; 1987-12-01 to 1989-10-12; source msha-controller-operator-history
- **operator_operates_mine:** T S C Enterprises Inc → Emerald Isle; 1989-10-13 to 2004-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Arimetco International Inc → Emerald Isle; 1989-10-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arimetco International Inc → T S C Enterprises Inc; 1989-10-13 to 2004-10-31; source msha-controller-operator-history
- **operator_operates_mine:** SGV Resources Inc → Emerald Isle; 2004-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** St Genevieve Resources Ltd → Emerald Isle; 2004-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** St Genevieve Resources Ltd → SGV Resources Inc; 2004-11-01 to current/open; source msha-controller-operator-history