# Relationship history for MSHA mine 0900747

Current hierarchy: **Rials William James → Charbon Inc → Dade No 2 Strip**

- 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:** Haynes Mining Inc → Dade No 2 Strip; 1950-01-01 to 1976-06-01; source msha-controller-operator-history
- **controller_controls_mine:** Haynes Ralph C → Dade No 2 Strip; 1950-01-01 to 1976-06-01; source msha-controller-operator-history
- **controller_controls_operator:** Haynes Ralph C → Haynes Mining Inc; 1950-01-01 to 1976-06-01; source msha-controller-operator-history
- **controller_controls_mine:** Rials William James → Dade No 2 Strip; 1973-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Charbon Inc → Dade No 2 Strip; 1976-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rials William James → Charbon Inc; 1976-06-02 to current/open; source msha-controller-operator-history