# Relationship history for MSHA mine 3609672

Current hierarchy: **Scott W  George → Scott George Bluestone → George 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:** Scott George Stone Company → George Quarry; 2008-09-11 to 2011-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Scott W  George → George Quarry; 2008-09-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott W  George → Scott George Stone Company; 2008-09-11 to 2011-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Flagstone Farmers LLC → George Quarry; 2011-09-01 to 2012-10-09; source msha-controller-operator-history
- **controller_controls_mine:** Brian J  White et al → George Quarry; 2011-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian J  White et al → Flagstone Farmers LLC; 2011-09-01 to 2012-10-09; source msha-controller-operator-history
- **controller_controls_operator:** Scott W  George et al → Flagstone Farmers LLC; 2011-09-01 to 2012-10-09; source msha-controller-operator-history
- **operator_operates_mine:** Scott George Bluestone → George Quarry; 2012-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott W  George → Scott George Bluestone; 2012-10-10 to current/open; source msha-controller-operator-history