# Relationship history for MSHA mine 2401908

Current hierarchy: **Cherhill Resources Inc → Cherhill Resources Inc → Cherhill Resources Incorporated**

- 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:** Cherhill Resources Inc → Cherhill Resources Incorporated; 1989-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cherhill Resources Inc → Cherhill Resources Incorporated; 1989-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cherhill Resources Inc → Cherhill Resources Inc; 1989-10-01 to current/open; source msha-controller-operator-history