# Relationship history for MSHA mine 3610391

Current hierarchy: **Tracy W  Bennett → T.Bennett Bluestone → Bennett 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

- **controller_controls_mine:** Tracy W  Bennett → Bennett Quarry; 2002-09-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** KB Flagstone → Bennett Quarry; 2022-05-11 to 2024-07-14; source msha-controller-operator-history
- **controller_controls_mine:** Kenny R  Bates → Bennett Quarry; 2022-05-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenny R  Bates → KB Flagstone; 2022-05-11 to 2024-07-14; source msha-controller-operator-history
- **operator_operates_mine:** T.Bennett Bluestone → Bennett Quarry; 2024-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tracy W  Bennett → T.Bennett Bluestone; 2024-07-15 to current/open; source msha-controller-operator-history