# Relationship history for MSHA mine 0504866

Current hierarchy: **Ronald Chauncey  Luttrell → Black Canyon Aggregate Inc → Black Canyon Aggregate Inc**

- 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

- **controller_controls_mine:** Ronald Chauncey  Luttrell → Black Canyon Aggregate Inc; 1993-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Black Canyon Aggregate Inc → Black Canyon Aggregate Inc; 2007-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald Chauncey  Luttrell → Black Canyon Aggregate Inc; 2007-03-08 to current/open; source msha-controller-operator-history