# Relationship history for MSHA mine 4406162

Current hierarchy: **Ward Steve → Clear Water Coal Inc → Mine No 1**

- 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:** Mr T Mining Inc → Mine No 1; 1984-12-01 to 1985-06-16; source msha-controller-operator-history
- **controller_controls_mine:** Hall Terry → Mine No 1; 1984-12-01 to 1985-06-16; source msha-controller-operator-history
- **controller_controls_operator:** Hall Terry → Mr T Mining Inc; 1984-12-01 to 1985-06-16; source msha-controller-operator-history
- **operator_operates_mine:** Clear Water Coal Inc → Mine No 1; 1985-06-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ward Steve → Mine No 1; 1985-06-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ward Steve → Clear Water Coal Inc; 1985-06-17 to current/open; source msha-controller-operator-history