# Relationship history for MSHA mine 0801425

Current hierarchy: **Richard  Stavola; Alexander  Stavola → Stavola Aggregate Supply → Brisbane 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:** Stavola Aggregate Supply → Brisbane Pit; 2019-07-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alexander  Stavola et al → Brisbane Pit; 2019-07-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alexander  Stavola et al → Stavola Aggregate Supply; 2019-07-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Stavola et al → Stavola Aggregate Supply; 2019-07-22 to current/open; source msha-controller-operator-history