# Relationship history for MSHA mine 4105437

Current hierarchy: **Kenneth  Warr → Cornerstone Crushing LLC → Big Lake 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Gage and Cade Construction, LLC. → Big Lake Plant; 2019-04-08 to 2019-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth  Warr → Big Lake Plant; 2019-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth  Warr → Gage and Cade Construction, LLC.; 2019-04-08 to 2019-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Cornerstone Crushing LLC → Big Lake Plant; 2020-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth  Warr → Big Lake Plant; 2020-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth  Warr → Cornerstone Crushing LLC; 2020-01-01 to current/open; source msha-controller-operator-history