# Relationship history for MSHA mine 0901257

Current hierarchy: **Chester Holdings Inc → Chester Holdings USA, Inc. → Royal Vindicator Mine**

- 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:** Chester Holdings USA, Inc. → Royal Vindicator Mine; 2020-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chester Holdings Inc → Royal Vindicator Mine; 2020-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chester Holdings Inc → Chester Holdings USA, Inc.; 2020-10-14 to current/open; source msha-controller-operator-history