# Relationship history for MSHA mine 1601255

Current hierarchy: **Kenny  Owens → Kenny Owens Gravel → K & C 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Kenny Owens Gravel → K & C Gravel; 1993-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenny  Owens → K & C Gravel; 1993-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenny  Owens → Kenny Owens Gravel; 1993-01-01 to current/open; source msha-controller-operator-history