# Relationship history for MSHA mine 3004011

Current hierarchy: **Jaime W  Marin → Marin Stone Quarries → Marin 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:** Timothy M  Smith → Marin Stone; 2016-03-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jaime W  Marin → Marin Stone; 2017-10-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ronald Opeil Flagstone Co LLC → Marin Stone; 2018-01-01 to 2020-06-08; source msha-controller-operator-history
- **controller_controls_operator:** Timothy M  Smith → Ronald Opeil Flagstone Co LLC; 2018-01-01 to 2020-06-08; source msha-controller-operator-history
- **operator_operates_mine:** Marin Stone Quarries → Marin Stone; 2020-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jaime W  Marin → Marin Stone Quarries; 2020-06-09 to current/open; source msha-controller-operator-history