# Relationship history for MSHA mine 3003130

Current hierarchy: **Jon  Vespa → John Vespa Inc → Arsenal Stone**

- 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:** Jon  Vespa → Arsenal Stone; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** John Vespa Inc → Arsenal Stone; 1994-08-01 to 2010-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Jon  Vespa → Arsenal Stone; 1994-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jon  Vespa → John Vespa Inc; 1994-08-01 to 2010-06-30; source msha-controller-operator-history
- **operator_operates_mine:** John Vespa Inc → Arsenal Stone; 2010-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jon  Vespa → John Vespa Inc; 2010-07-01 to current/open; source msha-controller-operator-history