# Relationship history for MSHA mine 4605343

Current hierarchy: **Blair Buster & Stephen Hatcher → Blair & Hatcher Mining Incorporaed → Mine No 43**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** B & M Coal Company Inc → Mine No 43; 1976-11-08 to 1992-11-12; source msha-controller-operator-history
- **controller_controls_mine:** Miller Jack & Paul → Mine No 43; 1976-11-08 to 1992-11-12; source msha-controller-operator-history
- **controller_controls_operator:** Miller Jack & Paul → B & M Coal Company Inc; 1976-11-08 to 1992-11-12; source msha-controller-operator-history
- **operator_operates_mine:** Blair & Hatcher Mining Incorporaed → Mine No 43; 1992-11-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Blair Buster & Stephen Hatcher → Mine No 43; 1992-11-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blair Buster & Stephen Hatcher → Blair & Hatcher Mining Incorporaed; 1992-11-13 to current/open; source msha-controller-operator-history