# Relationship history for MSHA mine 1103013

Current hierarchy: **Joseph A  Scharf → Carri Scharf Materials → CARRI SCHARF MATERIALS**

- 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

- **operator_operates_mine:** Carri Scharf Materials → CARRI SCHARF MATERIALS; 1997-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joseph A  Scharf et al → CARRI SCHARF MATERIALS; 1997-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph A  Scharf et al → Carri Scharf Materials; 1997-07-01 to current/open; source msha-controller-operator-history