# Relationship history for MSHA mine 3401698

Current hierarchy: **Kelly Buddy → C Kelly Trucking → Kelly Rock**

- 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:** Ed  Reeves → Kelly Rock; 1988-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sugar Loaf Quarries Inc → Kelly Rock; 1989-10-01 to 1993-03-09; source msha-controller-operator-history
- **controller_controls_operator:** Ed  Reeves → Sugar Loaf Quarries Inc; 1989-10-01 to 1993-03-09; source msha-controller-operator-history
- **operator_operates_mine:** C Kelly Trucking → Kelly Rock; 1993-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kelly Buddy → Kelly Rock; 1993-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kelly Buddy → C Kelly Trucking; 1993-03-10 to current/open; source msha-controller-operator-history