# Relationship history for MSHA mine 4104228

Current hierarchy: **Adrian H  Astello → Sunset Stone LLC → Santo 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:** Astello's Stone Company → Santo Quarry; 2000-07-01 to 2006-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Adrian H  Astello → Santo Quarry; 2000-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adrian H  Astello → Astello's Stone Company; 2000-07-01 to 2006-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Adrian H  Astello → Santo Quarry; 2006-01-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sunset Stone LLC → Santo Quarry; 2006-05-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adrian H  Astello → Sunset Stone LLC; 2006-05-20 to current/open; source msha-controller-operator-history