# Relationship history for MSHA mine 4103504

Current hierarchy: **Robert  Foster → Sun Paving Inc → Four Mile Draw**

- 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:** Sun Paving Inc → Four Mile Draw; 1988-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Foster → Four Mile Draw; 1988-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Foster → Sun Paving Inc; 1988-01-01 to current/open; source msha-controller-operator-history