# Relationship history for MSHA mine 2302418

Current hierarchy: **Dylan S  Baker → Triple B Sand & Gravel → Triple B Sand & Gravel**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Clyde I. Wilson Excavation → Triple B Sand & Gravel; 2011-05-07 to 2019-06-23; source msha-controller-operator-history
- **controller_controls_mine:** Clyde Ivory  Wilson → Triple B Sand & Gravel; 2011-05-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clyde Ivory  Wilson → Clyde I. Wilson Excavation; 2011-05-07 to 2019-06-23; source msha-controller-operator-history
- **operator_operates_mine:** Triple B Sand & Gravel → Triple B Sand & Gravel; 2019-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dylan S  Baker → Triple B Sand & Gravel; 2019-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dylan S  Baker → Triple B Sand & Gravel; 2019-06-24 to current/open; source msha-controller-operator-history