# Relationship history for MSHA mine 4406441

Current hierarchy: **Turner Fran E → South Pole Mining Inc → #1 Strip & Auger**

- 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

- **controller_controls_mine:** Turner Fran E Et Al → #1 Strip & Auger; 1986-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** South Pole Mining Inc → #1 Strip & Auger; 1988-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Turner Fran E Et Al → South Pole Mining Inc; 1988-01-01 to current/open; source msha-controller-operator-history