# Relationship history for MSHA mine 0103274

Current hierarchy: **Stephen K  McAlister → Winston Sand & Gravel, LLC → Cavender 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:** Winston Sand & Gravel, LLC → Cavender Pit; 2003-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stephen K  McAlister → Cavender Pit; 2003-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen K  McAlister → Winston Sand & Gravel, LLC; 2003-10-06 to current/open; source msha-controller-operator-history