# Relationship history for MSHA mine 4801606

Current hierarchy: **Richard  Mathey; Zane  Pasma → Oro Management LLC → Rock Creek Placer**

- 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:** Oro Management LLC → Rock Creek Placer; 2001-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Mathey et al → Rock Creek Placer; 2001-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Mathey et al → Oro Management LLC; 2001-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Zane  Pasma et al → Oro Management LLC; 2001-10-04 to current/open; source msha-controller-operator-history