# Relationship history for MSHA mine 4104044

Current hierarchy: **Rodney  Smithey → Vista Aggregates Llc → BRIDGEPORT QUARRY #1**

- 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:** Vista Aggregates Llc → BRIDGEPORT QUARRY #1; 1998-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rodney  Smithey → BRIDGEPORT QUARRY #1; 1998-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rodney  Smithey → Vista Aggregates Llc; 1998-12-01 to current/open; source msha-controller-operator-history