# Relationship history for MSHA mine 0505173

Current hierarchy: **Dan James Duche; Jason James Buesing → Meridiam Partners → Firestone Screen & Crush Plant**

- 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:** Meridiam Partners → Firestone Screen & Crush Plant; 2023-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jason James Buesing et al → Firestone Screen & Crush Plant; 2023-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason James Buesing et al → Meridiam Partners; 2023-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan James Duche et al → Meridiam Partners; 2023-06-06 to current/open; source msha-controller-operator-history