# Relationship history for MSHA mine 4800855

Current hierarchy: **Cogema S A → Pathfinder Mines Corp → Lucky Mc 7b Underground**

- 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:** Pathfinder Mines Corp → Lucky Mc 7b Underground; 1950-01-01 to 1982-02-28; source msha-controller-operator-history
- **controller_controls_mine:** General Electric Company → Lucky Mc 7b Underground; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** General Electric Company → Pathfinder Mines Corp; 1950-01-01 to 1982-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Pathfinder Mines Corp → Lucky Mc 7b Underground; 1982-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cogema S A → Lucky Mc 7b Underground; 1982-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cogema S A → Pathfinder Mines Corp; 1982-03-01 to current/open; source msha-controller-operator-history