# Relationship history for MSHA mine 3102192

Current hierarchy: **Wayne  Cassavaugh → Carolina Sand Inc → Carolina Sand Inc Idols Plant**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Wayne  Cassavaugh → Carolina Sand Inc Idols Plant; 1999-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carolina Sand Inc → Carolina Sand Inc Idols Plant; 2003-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wayne  Cassavaugh → Carolina Sand Inc; 2003-05-29 to current/open; source msha-controller-operator-history