# Relationship history for MSHA mine 4404816

Current hierarchy: **Tommy Joe  Owens → Double P 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Ellis  Baldwin → No 1 Mine; 1975-12-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Baldwin Coal Company Inc → No 1 Mine; 1977-08-01 to 1978-02-07; source msha-controller-operator-history
- **controller_controls_operator:** Ellis  Baldwin → Baldwin Coal Company Inc; 1977-08-01 to 1978-02-07; source msha-controller-operator-history
- **operator_operates_mine:** Double P Coal Company Inc → No 1 Mine; 1978-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tommy Joe  Owens → No 1 Mine; 1978-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tommy Joe  Owens → Double P Coal Company Inc; 1978-02-08 to current/open; source msha-controller-operator-history