# Relationship history for MSHA mine 4104546

Current hierarchy: **Kent K  Chopelas → Kent Chopelas → Gonzales 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Kent Chopelas → Gonzales Pit; 2005-08-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kent K  Chopelas → Gonzales Pit; 2005-08-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kent K  Chopelas → Kent Chopelas; 2005-08-30 to current/open; source msha-controller-operator-history