# Relationship history for MSHA mine 0801388

Current hierarchy: **Kenneth W  Bryan → Suncoast Concrete, Inc. → Suncoast Dirt 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Suncoast Concrete, Inc. → Suncoast Dirt Pit; 2010-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth W  Bryan → Suncoast Dirt Pit; 2010-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth W  Bryan → Suncoast Concrete, Inc.; 2010-07-13 to current/open; source msha-controller-operator-history