# Relationship history for MSHA mine 2103476

Current hierarchy: **Frank M  Frattalone → FRA-DOR, Inc. → Plant #2**

- 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:** Frank M  Frattalone → Plant #2; 2004-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** FRA-DOR, Inc. → Plant #2; 2005-04-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frank M  Frattalone → FRA-DOR, Inc.; 2005-04-06 to current/open; source msha-controller-operator-history