# Relationship history for MSHA mine 4105865

Current hierarchy: **ATM Holdings LLC → Armadillo Materials, LLC → Uvalde Quarry Company**

- 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:** Tex-Mix Partners Ltd → Uvalde Quarry Company; 2018-11-27 to 2021-12-31; source msha-controller-operator-history
- **controller_controls_mine:** ATM Holdings LLC → Uvalde Quarry Company; 2022-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Armadillo Materials, LLC → Uvalde Quarry Company; 2026-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tex-Mix Partners Ltd → Armadillo Materials, LLC; 2026-04-07 to 2021-12-31; source msha-controller-operator-history
- **controller_controls_operator:** ATM Holdings LLC → Armadillo Materials, LLC; 2026-04-07 to current/open; source msha-controller-operator-history