# Relationship history for MSHA mine 0403698

Current hierarchy: **Steven Michael  Boneck; Vic L  Batastini → Santa Barbara Sand & Top Soil → Ellwood 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:** Santa Barbara Sand & Top Soil → Ellwood Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Vic L  Batastini et al → Ellwood Pit; 1950-01-01 to 2026-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Vic L  Batastini et al → Santa Barbara Sand & Top Soil; 1950-01-01 to 2026-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Ed A  Batastini et al → Santa Barbara Sand & Top Soil; 1950-01-01 to 2026-01-04; source msha-controller-operator-history
- **controller_controls_mine:** Vic L  Batastini et al → Ellwood Pit; 2026-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vic L  Batastini et al → Santa Barbara Sand & Top Soil; 2026-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steven Michael  Boneck et al → Santa Barbara Sand & Top Soil; 2026-01-05 to current/open; source msha-controller-operator-history