# Relationship history for MSHA mine 2103493

Current hierarchy: **Jason R  Ferche → J. R. Ferche Inc. → Stripping crew**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** J. R. Ferche Inc. → Stripping crew; 2005-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jason R  Ferche → Stripping crew; 2005-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason R  Ferche → J. R. Ferche Inc.; 2005-05-10 to current/open; source msha-controller-operator-history