# Relationship history for MSHA mine 2700564

Current hierarchy: **Mark W  Champagne → Champagne Solutions LLC → Bethlehem Earth Materials**

- 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:** Mark W  Champagne → Bethlehem Earth Materials; 2009-06-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Champagne Solutions LLC → Bethlehem Earth Materials; 2025-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark W  Champagne → Champagne Solutions LLC; 2025-04-16 to current/open; source msha-controller-operator-history