# Relationship history for MSHA mine 1901324

Current hierarchy: **Dennis E  Condron → D. CONDRON CONSTRUCTION, INC. → RENTAL PLANT**

- 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

- **controller_controls_mine:** Dennis E  Condron → RENTAL PLANT; 2008-06-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** D. Condron Construction, Inc. → RENTAL PLANT; 2025-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dennis E  Condron → D. Condron Construction, Inc.; 2025-04-04 to current/open; source msha-controller-operator-history