# Relationship history for MSHA mine 4202194

Current hierarchy: **Eskelson Brandon L → Cheyenne Stone Supply → CHEYENNE STONE SUPPLY**

- 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:** Cheyenne Stone Supply → CHEYENNE STONE SUPPLY; 1998-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eskelson Brandon L → CHEYENNE STONE SUPPLY; 1998-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eskelson Brandon L → Cheyenne Stone Supply; 1998-05-01 to current/open; source msha-controller-operator-history