# Relationship history for MSHA mine 0405855

Current hierarchy: **Brian  Turner; Lynne  Turner → Turner Excavating, Inc → Indian Valley Rock**

- 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:** Turner Excavating, Inc → Indian Valley Rock; 2012-09-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brian  Turner et al → Indian Valley Rock; 2012-09-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian  Turner et al → Turner Excavating, Inc; 2012-09-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lynne  Turner et al → Turner Excavating, Inc; 2012-09-21 to current/open; source msha-controller-operator-history