# Relationship history for MSHA mine 0405994

Current hierarchy: **Michael  Mattivi; Anthony  Mattivi → Recycled Base Materials, Inc → Martin Marietta Hughson 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:** Albert  Mattivi → Martin Marietta Hughson Plant; 2010-05-12 to 2026-08-05; source msha-controller-operator-history
- **operator_operates_mine:** Recycled Base Materials, Inc → Martin Marietta Hughson Plant; 2026-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Albert  Mattivi → Recycled Base Materials, Inc; 2026-08-06 to 2026-08-05; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Mattivi et al → Martin Marietta Hughson Plant; 2026-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Mattivi et al → Recycled Base Materials, Inc; 2026-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Mattivi et al → Recycled Base Materials, Inc; 2026-08-06 to current/open; source msha-controller-operator-history