# Relationship history for MSHA mine 0801302

Current hierarchy: **Durwin  Tyner → Durwin Tyner Construction Inc → 101 RANCH ROAD 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

- **operator_operates_mine:** Durwin Tyner Construction Inc → 101 RANCH ROAD MINE; 2001-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Durwin  Tyner → 101 RANCH ROAD MINE; 2001-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Durwin  Tyner → Durwin Tyner Construction Inc; 2001-07-01 to current/open; source msha-controller-operator-history