# Relationship history for MSHA mine 4000122

Current hierarchy: **Martin Marietta Materials Inc → Martin Marietta Southeast Agg Operations, LLC → Locust Mount Quarry**

- 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:** Washington County Highway Department → Locust Mount Quarry; 1950-01-01 to 2004-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Washington County-TN → Locust Mount Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Washington County-TN → Washington County Highway Department; 1950-01-01 to 2004-01-01; source msha-controller-operator-history
- **controller_controls_mine:** CSR Ltd → Locust Mount Quarry; 2000-07-01 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Rinker Group Ltd → Locust Mount Quarry; 2003-04-01 to 2007-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Rinker Materials South Central Inc → Locust Mount Quarry; 2004-01-02 to 2008-02-21; source msha-controller-operator-history
- **controller_controls_operator:** Rinker Group Ltd → Rinker Materials South Central Inc; 2004-01-02 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_operator:** CSR Ltd → Rinker Materials South Central Inc; 2004-01-02 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Locust Mount Quarry; 2007-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Rinker Materials South Central Inc; 2007-07-10 to 2008-02-21; source msha-controller-operator-history
- **controller_controls_mine:** Ready Mix USA Inc → Locust Mount Quarry; 2008-01-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Aggregates USA LLC → Locust Mount Quarry; 2008-02-22 to 2010-02-05; source msha-controller-operator-history
- **controller_controls_operator:** Ready Mix USA Inc → Aggregates USA LLC; 2008-02-22 to 2010-02-05; source msha-controller-operator-history
- **operator_operates_mine:** Aggregates USA LLC → Locust Mount Quarry; 2010-02-06 to 2017-12-29; source msha-controller-operator-history
- **controller_controls_mine:** Aggregates USA Holdings LLC → Locust Mount Quarry; 2010-02-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aggregates USA Holdings LLC → Aggregates USA LLC; 2010-02-06 to 2017-12-29; source msha-controller-operator-history
- **controller_controls_mine:** Blue Water Industries Holdings LLC → Locust Mount Quarry; 2017-12-29 to 2024-04-28; source msha-controller-operator-history
- **operator_operates_mine:** Blue Water Industries → Locust Mount Quarry; 2017-12-30 to 2024-12-11; source msha-controller-operator-history
- **controller_controls_operator:** Blue Water Industries Holdings LLC → Blue Water Industries; 2017-12-30 to 2024-04-28; source msha-controller-operator-history
- **controller_controls_mine:** Martin Marietta Materials Inc → Locust Mount Quarry; 2024-04-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin Marietta Materials Inc → Blue Water Industries; 2024-04-29 to 2024-12-11; source msha-controller-operator-history
- **operator_operates_mine:** Martin Marietta Southeast Agg Operations, LLC → Locust Mount Quarry; 2024-12-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Martin Marietta Materials Inc → Locust Mount Quarry; 2024-12-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin Marietta Materials Inc → Martin Marietta Southeast Agg Operations, LLC; 2024-12-12 to current/open; source msha-controller-operator-history