# Relationship history for MSHA mine 4104515

Current hierarchy: **Apolonio  Ocana; Rafael  Ocana → Pesa Stone Company → Pesa Pit**

- 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:** Pesa Stone Company → Pesa Pit; 2005-01-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Apolonio  Ocana et al → Pesa Pit; 2005-01-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Apolonio  Ocana et al → Pesa Stone Company; 2005-01-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rafael  Ocana et al → Pesa Stone Company; 2005-01-11 to current/open; source msha-controller-operator-history