# Relationship history for MSHA mine 0103590

Current hierarchy: **Eugene P Robichaux; Leona G Robichaux; David C Robichaux → Coastal Rock LLC → Russellville Quarry**

- 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:** Coastal Rock LLC → Russellville Quarry; 2023-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Leona G Robichaux et al → Russellville Quarry; 2023-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leona G Robichaux et al → Coastal Rock LLC; 2023-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David C Robichaux et al → Coastal Rock LLC; 2023-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eugene P Robichaux et al → Coastal Rock LLC; 2023-10-01 to current/open; source msha-controller-operator-history