# Relationship history for MSHA mine 4104363

Current hierarchy: **Martin Marietta Materials Inc → Martin Marietta Materials Southwest, LLC → Webberville S&G**

- 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:** Travis Aggregates GP LLC → Webberville S&G; 2002-04-01 to 2005-07-28; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Weynand et al → Webberville S&G; 2002-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Weynand et al → Travis Aggregates GP LLC; 2002-04-01 to 2005-07-28; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Mosley et al → Travis Aggregates GP LLC; 2002-04-01 to 2005-07-28; source msha-controller-operator-history
- **controller_controls_mine:** Texas Industries Inc → Webberville S&G; 2004-12-01 to 2014-07-01; source msha-controller-operator-history
- **operator_operates_mine:** TA Acquisitions LP → Webberville S&G; 2005-07-29 to 2008-07-13; source msha-controller-operator-history
- **controller_controls_mine:** T A Acquisitions LP → Webberville S&G; 2005-07-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** T A Acquisitions LP → TA Acquisitions LP; 2005-07-29 to 2008-07-13; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Weynand et al → TA Acquisitions LP; 2005-07-29 to 2008-07-13; source msha-controller-operator-history
- **controller_controls_mine:** Martin Marietta Materials Inc → Webberville S&G; 2007-11-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** TXI Operations, LP → Webberville S&G; 2008-07-14 to 2023-01-22; source msha-controller-operator-history
- **controller_controls_operator:** Texas Industries Inc → TXI Operations, LP; 2008-07-14 to 2014-07-01; source msha-controller-operator-history
- **controller_controls_mine:** Martin Marietta Materials Inc → Webberville S&G; 2014-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin Marietta Materials Inc → TXI Operations, LP; 2014-07-02 to 2023-01-22; source msha-controller-operator-history
- **operator_operates_mine:** Martin Marietta Materials Southwest, LLC → Webberville S&G; 2023-01-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin Marietta Materials Inc → Martin Marietta Materials Southwest, LLC; 2023-01-23 to current/open; source msha-controller-operator-history