# Relationship history for MSHA mine 3102174

Current hierarchy: **Andy  Purifoy; Alan  Russell → Carolina Stone LLC → CAROLINA STONE**

- 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:** Carolina Stone LLC → CAROLINA STONE; 2001-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alan  Russell  et al → CAROLINA STONE; 2001-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alan  Russell  et al → Carolina Stone LLC; 2001-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Andy  Purifoy  et al → Carolina Stone LLC; 2001-05-01 to current/open; source msha-controller-operator-history