# Relationship history for MSHA mine 4503445

Current hierarchy: **William  Hyde; Scott  Hackney → Marenakos Inc → Tenino**

- 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:** Marenakos Inc → Tenino; 2000-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scott  Hackney et al → Tenino; 2000-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Hackney et al → Marenakos Inc; 2000-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Hyde et al → Marenakos Inc; 2000-06-01 to current/open; source msha-controller-operator-history