# Relationship history for MSHA mine 4703333

Current hierarchy: **Jonathan J  Halverson → Forever Sandfill & Limestone Inc. → Forever Sandfill & Limestone/Bucks-Utica**

- 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

- **operator_operates_mine:** Forever Sandfill & Limestone Inc. → Forever Sandfill & Limestone/Bucks-Utica; 2002-12-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jonathan J  Halverson → Forever Sandfill & Limestone/Bucks-Utica; 2002-12-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jonathan J  Halverson → Forever Sandfill & Limestone Inc.; 2002-12-12 to current/open; source msha-controller-operator-history