# Relationship history for MSHA mine 5001743

Current hierarchy: **Roy  Philpott → E. R. Mining → E. R. Mining**

- 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:** E. R. Mining → E. R. Mining; 2002-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Roy  Philpott → E. R. Mining; 2002-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roy  Philpott → E. R. Mining; 2002-05-03 to current/open; source msha-controller-operator-history