# Relationship history for MSHA mine 3402228

Current hierarchy: **Chance  Gros → Superior Stone Quarries LLC → SSQ 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

- **controller_controls_mine:** Kenneth Blaine Blaylock et al → SSQ 1; 2018-02-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Yote Stone LLC → SSQ 1; 2022-10-10 to 2023-02-06; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth Blaine Blaylock et al → Yote Stone LLC; 2022-10-10 to 2023-02-06; source msha-controller-operator-history
- **controller_controls_operator:** Chance M Gros et al → Yote Stone LLC; 2022-10-10 to 2023-02-06; source msha-controller-operator-history
- **operator_operates_mine:** Superior Stone Quarries LLC → SSQ 1; 2023-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chance  Gros → SSQ 1; 2023-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chance  Gros → Superior Stone Quarries LLC; 2023-02-07 to current/open; source msha-controller-operator-history