# Relationship history for MSHA mine 0801167

Current hierarchy: **Scott  Wagner → Wagner Tractor Service Inc → WAGNER 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Taylor Ranch Inc → WAGNER MINE; 1991-07-01 to 2000-03-19; source msha-controller-operator-history
- **controller_controls_mine:** Thomas H  Taylor Sr → WAGNER MINE; 1991-07-01 to 2000-03-19; source msha-controller-operator-history
- **controller_controls_operator:** Thomas H  Taylor Sr → Taylor Ranch Inc; 1991-07-01 to 2000-03-19; source msha-controller-operator-history
- **operator_operates_mine:** Wagner Tractor Service Inc → WAGNER MINE; 2000-03-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scott  Wagner → WAGNER MINE; 2000-03-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Wagner → Wagner Tractor Service Inc; 2000-03-20 to current/open; source msha-controller-operator-history