# Relationship history for MSHA mine 4503473

Current hierarchy: **Manke Family Resources & Tacoma Timber Company → Manke Family Resources LP → Manke Family Res LP Johns Prairie 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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Manke Family Resources LP → Manke Family Res LP Johns Prairie Mine; 2001-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Manke Family Resources & Tacoma Timber Company → Manke Family Res LP Johns Prairie Mine; 2001-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Manke Family Resources & Tacoma Timber Company → Manke Family Resources LP; 2001-04-01 to current/open; source msha-controller-operator-history