# Relationship history for MSHA mine 2501160

Current hierarchy: **Mohr Paul → Panhandle Concrete Products Inc → PANHANDLE CONCRETE PRODUCTS INC**

- 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:** Panhandle Concrete Products Inc → PANHANDLE CONCRETE PRODUCTS INC; 1994-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mohr Paul → PANHANDLE CONCRETE PRODUCTS INC; 1994-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mohr Paul → Panhandle Concrete Products Inc; 1994-08-01 to current/open; source msha-controller-operator-history