# Relationship history for MSHA mine 3608954

Current hierarchy: **Gene L  Rafferty → Snake Creek Stone → CASSELBURY QUARRY WEST**

- 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:** Snake Creek Stone → CASSELBURY QUARRY WEST; 2001-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gene L  Rafferty → CASSELBURY QUARRY WEST; 2001-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gene L  Rafferty → Snake Creek Stone; 2001-04-01 to current/open; source msha-controller-operator-history