# Relationship history for MSHA mine 1202177

Current hierarchy: **Rick  Risinger → Midwest Fuels Inc → Midwest Fuels Inc Preparation Plant**

- 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

- **controller_controls_mine:** Whitehead Richard H → Midwest Fuels Inc Preparation Plant; 1994-09-01 to 1995-05-17; source msha-controller-operator-history
- **operator_operates_mine:** Black Diamond Coal Company Inc → Midwest Fuels Inc Preparation Plant; 1995-02-01 to 1995-05-17; source msha-controller-operator-history
- **controller_controls_operator:** Whitehead Richard H → Black Diamond Coal Company Inc; 1995-02-01 to 1995-05-17; source msha-controller-operator-history
- **controller_controls_mine:** Rick  Risinger → Midwest Fuels Inc Preparation Plant; 1995-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Midwest Fuels Inc → Midwest Fuels Inc Preparation Plant; 1995-05-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rick  Risinger → Midwest Fuels Inc; 1995-05-18 to current/open; source msha-controller-operator-history