# Relationship history for MSHA mine 3402217

Current hierarchy: **Fidel  Galvan → J&J�S Stone LLC → Double L**

- 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:** Kenneth Blaine Blaylock et al → Double L; 2018-02-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Yote Stone → Double L; 2021-11-17 to 2023-02-06; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth Blaine Blaylock et al → Yote Stone; 2021-11-17 to 2023-02-06; source msha-controller-operator-history
- **controller_controls_operator:** Chance M Gros et al → Yote Stone; 2021-11-17 to 2023-02-06; source msha-controller-operator-history
- **operator_operates_mine:** Superior Stone Quarries LLC → Double L; 2023-02-07 to 2024-09-03; source msha-controller-operator-history
- **controller_controls_mine:** Chance  Gros → Double L; 2023-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chance  Gros → Superior Stone Quarries LLC; 2023-02-07 to 2024-09-03; source msha-controller-operator-history
- **operator_operates_mine:** J&J�S Stone LLC → Double L; 2024-09-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fidel  Galvan → Double L; 2024-09-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fidel  Galvan → J&J�S Stone LLC; 2024-09-04 to current/open; source msha-controller-operator-history