# Relationship history for MSHA mine 4105267

Current hierarchy: **Chet M Fazand → AusTex Aggregates LLC → AusTex Aggregates LLC**

- 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:** Sitemaster Excavation LLC → AusTex Aggregates LLC; 2017-06-09 to 2018-09-30; source msha-controller-operator-history
- **controller_controls_mine:** John S  Murgatroyd → AusTex Aggregates LLC; 2017-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John S  Murgatroyd → Sitemaster Excavation LLC; 2017-06-09 to 2018-09-30; source msha-controller-operator-history
- **operator_operates_mine:** AusTex Aggregates LLC → AusTex Aggregates LLC; 2018-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Patrick  McCartan et al → AusTex Aggregates LLC; 2018-10-01 to 2022-02-15; source msha-controller-operator-history
- **controller_controls_operator:** Patrick  McCartan et al → AusTex Aggregates LLC; 2018-10-01 to 2022-02-15; source msha-controller-operator-history
- **controller_controls_operator:** John S  Murgatroyd et al → AusTex Aggregates LLC; 2018-10-01 to 2022-02-15; source msha-controller-operator-history
- **controller_controls_operator:** Chet M  Fazand et al → AusTex Aggregates LLC; 2018-10-01 to 2022-02-15; source msha-controller-operator-history
- **controller_controls_mine:** John S Murgatroyd et al → AusTex Aggregates LLC; 2022-02-16 to 2024-03-24; source msha-controller-operator-history
- **controller_controls_operator:** John S Murgatroyd et al → AusTex Aggregates LLC; 2022-02-16 to 2024-03-24; source msha-controller-operator-history
- **controller_controls_operator:** Chet M Fazand et al → AusTex Aggregates LLC; 2022-02-16 to 2024-03-24; source msha-controller-operator-history
- **controller_controls_mine:** Chet M Fazand → AusTex Aggregates LLC; 2024-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chet M Fazand → AusTex Aggregates LLC; 2024-03-25 to current/open; source msha-controller-operator-history