# Relationship history for MSHA mine 3001824

Current hierarchy: **Meaney Sharon → William A Meaney Sand & Gravel Inc → Scriba 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:** William A Meaney Sand & Gravel Inc → Scriba Pit; 1950-01-01 to 1987-05-04; source msha-controller-operator-history
- **controller_controls_mine:** Meaney William A → Scriba Pit; 1950-01-01 to 1987-05-04; source msha-controller-operator-history
- **controller_controls_operator:** Meaney William A → William A Meaney Sand & Gravel Inc; 1950-01-01 to 1987-05-04; source msha-controller-operator-history
- **operator_operates_mine:** William A Meaney Sand & Gravel Inc → Scriba Pit; 1987-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Meaney Sharon → Scriba Pit; 1987-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Meaney Sharon → William A Meaney Sand & Gravel Inc; 1987-05-05 to current/open; source msha-controller-operator-history