# Relationship history for MSHA mine 4105413

Current hierarchy: **Angel I  Durrett; David J  Durrett → Independence TX, LLC → Abrego**

- 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:** South Texas Frac, LLC → Abrego; 2019-02-20 to 2023-10-31; source msha-controller-operator-history
- **controller_controls_mine:** WI Texas Frac, LLC et al → Abrego; 2019-02-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** WI Texas Frac, LLC et al → South Texas Frac, LLC; 2019-02-20 to 2023-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Frac Investments, LLC et al → South Texas Frac, LLC; 2019-02-20 to 2023-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Angel I  Durrett et al → Abrego; 2020-11-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Independence TX, LLC → Abrego; 2023-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Angel I  Durrett et al → Independence TX, LLC; 2023-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David J  Durrett et al → Independence TX, LLC; 2023-11-01 to current/open; source msha-controller-operator-history