# Relationship history for MSHA mine 4407057

Current hierarchy: **Ervin  Stiltner; Keith  Stiltner → Patriot  Mining, LLC. → No. 1**

- 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

- **operator_operates_mine:** Patriot  Mining, LLC. → No. 1; 2002-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Keith  Stiltner et al → No. 1; 2002-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith  Stiltner et al → Patriot  Mining, LLC.; 2002-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ervin  Stiltner et al → Patriot  Mining, LLC.; 2002-09-16 to current/open; source msha-controller-operator-history