# Relationship history for MSHA mine 1508438

Current hierarchy: **Bledsoe James E → B M Mining & Milling Co Inc → No 5 Mine**

- 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

- **controller_controls_mine:** Bledsoe James E → No 5 Mine; 1974-07-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B M Mining & Milling Co Inc → No 5 Mine; 1975-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bledsoe James E → B M Mining & Milling Co Inc; 1975-06-13 to current/open; source msha-controller-operator-history