# Relationship history for MSHA mine 4407137

Current hierarchy: **Ervin  Stiltner; Keith  Stiltner → PATRIOT MINING, LLC → 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Ervin  Stiltner et al → NO. 2; 2002-09-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Patriot Mining, LLC → NO. 2; 2005-05-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ervin  Stiltner et al → Patriot Mining, LLC; 2005-05-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith  Stiltner et al → Patriot Mining, LLC; 2005-05-16 to current/open; source msha-controller-operator-history