# Relationship history for MSHA mine 4703984

Current hierarchy: **Jeff  Stodola → Peninsula Stone, Inc. → Scheuring Road Quarry**

- 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

- **controller_controls_mine:** Jeff  Stodola et al → Scheuring Road Quarry; 2009-05-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Peninsula Stone, Inc. → Scheuring Road Quarry; 2025-07-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Stodola et al → Peninsula Stone, Inc.; 2025-07-22 to current/open; source msha-controller-operator-history