# Relationship history for MSHA mine 2801009

Current hierarchy: **Joseph  Stavola III; Richard J  Stavola → Stavola Mining and Development Company → Monroe 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 Mining and Development Company → Monroe Pit; 2001-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joseph  Stavola III et al → Monroe Pit; 2001-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Stavola III et al → Stavola Mining and Development Company; 2001-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard J  Stavola et al → Stavola Mining and Development Company; 2001-10-03 to current/open; source msha-controller-operator-history