# Relationship history for MSHA mine 4404242

Current hierarchy: **Ellis  Baldwin → Baldwin Coal Company Inc → No 1 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Baldwin Coal Company Inc → No 1 Mine; 1975-12-18 to 1976-07-15; source msha-controller-operator-history
- **controller_controls_mine:** Ellis  Baldwin → No 1 Mine; 1975-12-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ellis  Baldwin → Baldwin Coal Company Inc; 1975-12-18 to 1976-07-15; source msha-controller-operator-history
- **operator_operates_mine:** Baldwin Coal Company → No 1 Mine; 1976-07-16 to 1977-02-17; source msha-controller-operator-history
- **controller_controls_mine:** Corbett W P → No 1 Mine; 1976-07-16 to 1977-02-17; source msha-controller-operator-history
- **controller_controls_operator:** Corbett W P → Baldwin Coal Company; 1976-07-16 to 1977-02-17; source msha-controller-operator-history
- **operator_operates_mine:** Roark & Coleman Coal Company → No 1 Mine; 1977-02-18 to 1977-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Roark Cecil & Lester Coleman → No 1 Mine; 1977-02-18 to 1977-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Roark Cecil & Lester Coleman → Roark & Coleman Coal Company; 1977-02-18 to 1977-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Baldwin Coal Company Inc → No 1 Mine; 1977-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ellis  Baldwin → Baldwin Coal Company Inc; 1977-06-01 to current/open; source msha-controller-operator-history