# Relationship history for MSHA mine 3304273

Current hierarchy: **American Industries & Resources--Starvaggi Enterpr → Rayland Harbor Inc → Rayland Harbor**

- 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

- **operator_operates_mine:** Rayland Harbor Inc → Rayland Harbor; 1992-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** American Industries & Resources--Starvaggi Enterpr → Rayland Harbor; 1992-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** American Industries & Resources--Starvaggi Enterpr → Rayland Harbor Inc; 1992-06-01 to current/open; source msha-controller-operator-history