# Relationship history for MSHA mine 4407081

Current hierarchy: **Ervin  Stiltner → Regent Allied Carbon Energy, Inc. → 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:** Ervin  Stiltner → No. 2; 1994-09-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Regent Allied Carbon Energy, Inc. → No. 2; 2003-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ervin  Stiltner → Regent Allied Carbon Energy, Inc.; 2003-08-04 to current/open; source msha-controller-operator-history