# Relationship history for MSHA mine 5002088

Current hierarchy: **Ernst  Siemoneit → Opportunity Placer → Richardson Claims**

- 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:** Opportunity Placer → Richardson Claims; 2022-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ernst  Siemoneit → Richardson Claims; 2022-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ernst  Siemoneit → Opportunity Placer; 2022-03-15 to current/open; source msha-controller-operator-history