# Relationship history for MSHA mine 2602750

Current hierarchy: **United Resource Holdings Group, Inc. → Dun Glen Mining, Corp. → Dun Glen Placer 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:** Dun Glen Mining, Corp. → Dun Glen Placer Mine; 2013-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** United Resource Holdings Group, Inc. → Dun Glen Placer Mine; 2013-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** United Resource Holdings Group, Inc. → Dun Glen Mining, Corp.; 2013-10-01 to current/open; source msha-controller-operator-history