# Relationship history for MSHA mine 3609032

Current hierarchy: **Robert E  Murray → American Compliance Coal Inc → American Compliance Coal Mines**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** American Compliance Coal Inc → American Compliance Coal Mines; 2001-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert E  Murray → American Compliance Coal Mines; 2001-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert E  Murray → American Compliance Coal Inc; 2001-10-01 to current/open; source msha-controller-operator-history