# Relationship history for MSHA mine 0101741

Current hierarchy: **Dill Olen A → Carbon Fuel Company Inc → Pit No 1-Coon Creek Pit**

- 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:** Carbon Fuel Company Inc → Pit No 1-Coon Creek Pit; 1977-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dill Olen A → Pit No 1-Coon Creek Pit; 1977-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dill Olen A → Carbon Fuel Company Inc; 1977-06-01 to current/open; source msha-controller-operator-history