# Relationship history for MSHA mine 4606835

Current hierarchy: **Brown James R → Jada Coal & Construction Company Inc → Jada Coal & Construction Co Inc**

- 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

- **operator_operates_mine:** Jada Coal & Construction Company Inc → Jada Coal & Construction Co Inc; 1984-08-01 to 1988-03-01; source msha-controller-operator-history
- **controller_controls_mine:** Rogers James A & Cranston David Johnson → Jada Coal & Construction Co Inc; 1984-08-01 to 1988-03-01; source msha-controller-operator-history
- **controller_controls_operator:** Rogers James A & Cranston David Johnson → Jada Coal & Construction Company Inc; 1984-08-01 to 1988-03-01; source msha-controller-operator-history
- **operator_operates_mine:** Jada Coal & Construction Company Inc → Jada Coal & Construction Co Inc; 1988-03-02 to 1989-03-27; source msha-controller-operator-history
- **controller_controls_mine:** Johnson Cranston D → Jada Coal & Construction Co Inc; 1988-03-02 to 1989-03-27; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Cranston D → Jada Coal & Construction Company Inc; 1988-03-02 to 1989-03-27; source msha-controller-operator-history
- **operator_operates_mine:** Jada Coal & Construction Company Inc → Jada Coal & Construction Co Inc; 1989-03-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brown James R → Jada Coal & Construction Co Inc; 1989-03-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brown James R → Jada Coal & Construction Company Inc; 1989-03-28 to current/open; source msha-controller-operator-history