# Relationship history for MSHA mine 4607057

Current hierarchy: **Porter Johnny → Mutual Mining Inc → Mutual I**

- 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:** Mooney James S Sr Et Al → Mutual I; 1973-08-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Elm Coal Corp → Mutual I; 1985-12-01 to 1989-03-28; source msha-controller-operator-history
- **controller_controls_operator:** Mooney James S Sr Et Al → Elm Coal Corp; 1985-12-01 to 1989-03-28; source msha-controller-operator-history
- **operator_operates_mine:** Mutual Mining Inc → Mutual I; 1989-03-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Porter Johnny → Mutual I; 1989-03-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Porter Johnny → Mutual Mining Inc; 1989-03-29 to current/open; source msha-controller-operator-history