# Relationship history for MSHA mine 2602863

Current hierarchy: **Blaine  Conrad; Brandon  Conrad → Apex Materials LLC. → Werdco Apex**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Apex Materials LLC. → Werdco Apex; 2020-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Blaine  Conrad et al → Werdco Apex; 2020-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blaine  Conrad et al → Apex Materials LLC.; 2020-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brandon  Conrad et al → Apex Materials LLC.; 2020-09-16 to current/open; source msha-controller-operator-history