# Relationship history for MSHA mine 3102265

Current hierarchy: **Wayne  Cassavaugh → Carolina Sand, Inc. → Grants Creek Sand 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Wayne  Cassavaugh → Grants Creek Sand Pit; 1999-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carolina Sand, Inc. → Grants Creek Sand Pit; 2011-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wayne  Cassavaugh → Carolina Sand, Inc.; 2011-07-24 to current/open; source msha-controller-operator-history