# Relationship history for MSHA mine 3303854

Current hierarchy: **Colucy Rafael F → R & E Coal Company → Gasser Strip**

- 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

- **controller_controls_mine:** Colucy Rafael F → Gasser Strip; 1976-01-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** R & E Coal Company → Gasser Strip; 1981-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Colucy Rafael F → R & E Coal Company; 1981-01-01 to current/open; source msha-controller-operator-history