# Relationship history for MSHA mine 1517038

Current hierarchy: **Francis James D Ii → Francis Coals Inc → Surface Mine 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Francis James D Ii → Surface Mine No 2; 1990-04-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Francis Coals Inc → Surface Mine No 2; 1991-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Francis James D Ii → Francis Coals Inc; 1991-01-01 to current/open; source msha-controller-operator-history